What's a Sample? Complete Guide

What is a sample and why is it essential for sellers?

What is a sample? A sample - also known as a prototype, trial product, or test product - is a single unit or a small quantity of a product that you receive to assess the quality, finish, and specifications before placing a large purchase order. For sellers on bol.com, requesting samples is one of the most important steps in the purchasing process: it protects you from poor quality, negative reviews, and financial losses.

In the world of e-commerce and marketplace sales, a sample is your first physical encounter with the product you'll be offering to thousands of customers. Whether you work with suppliers from China via Alibaba, European wholesalers, or local manufacturers - it always starts with a sample. In this comprehensive article, we'll explain everything about what a sample is, how to handle the process smartly as a bol.com seller, and which mistakes you should absolutely avoid.

Types of samples: which one suits your situation?

Not all samples are the same. Depending on your product, supplier, and phase in the purchasing process, there are different types of samples you can request. Understanding these differences helps you request the right type and save costs.

Type of sample	Description	When to use	Average cost
Standard sample	Existing product from the supplier's stock	First encounter with the product	€5 – €50 + shipping
Custom sample	Product customized to your specifications (color, logo, material)	Private label products	€20 – €200 + shipping
Pre-production sample	First unit from the production line before mass production	After approving a custom sample	€50 – €500
Golden sample	Definitively approved reference sample	As a standard for quality control	Part of production costs
Production sample	Random unit from ongoing production	Quality control during production	Free or minimal cost
Free sample	Supplier offers a sample without costs	When establishing new supplier relationships or at trade fairs	Free (you pay shipping)

Standard vs. custom samples

A standard sample is the fastest and cheapest: the supplier sends an existing product from stock. This is ideal for a first impression. A custom sample takes more time and investment, but is essential if you sell products under your own brand (private label). In private label sales on bol.com, the custom sample is the step that determines whether your product stands out from the competition.

The golden sample principle

Professional buyers work with a so-called golden sample: the definitively approved unit that serves as a reference for the entire production. Always keep this sample - it's your proof if the delivered products deviate from the agreed-upon quality. With tools like Boloo's Product Tracker, you can then monitor how your product performs on bol.com after launch.

Why are samples so important for bol.com sellers?

Requesting samples is not optional - it's a fundamental step that protects you from costly mistakes. Below are the five most important reasons why every sample is an investment that pays off.

1. Quality control before major investment

A sample allows you to assess the product quality with your own eyes and hands. You check materials, finish, weight, color, and functionality. Without a sample, you risk investing thousands of euros in products that don't meet your expectations - and that translates directly into negative reviews and returns on bol.com.

2. Preventing Negative Reviews

On bol.com, reviews determine your ranking and conversion. Products with poor quality lead to negative reviews, higher return rates, and ultimately lower search positions. By testing samples beforehand, you filter out products with defects. Use Boloo's Ranking Checker to monitor how your product reviews affect your position.

3. Comparing Suppliers

Request samples from at least three different suppliers for the same product. This allows you to objectively compare quality, packaging, delivery time, and price. This is especially important for products you purchase via Alibaba or other international platforms, where quality differences can be significant.

4. Listing Content and Product Photography

With a physical sample, you create professional product photos and videos for your bol.com listing. Good visual content significantly increases your conversion rate. Use the sample to record exact dimensions, weight, and specifications for your product description. With Boloo's AI Listing Generator, you then create an optimized product page that scores higher in search results.

5. Building Relationships with Suppliers

The sampling process is also a test of your supplier relationship. How quickly does the supplier respond? Is communication professional? Are your specifications followed accurately? A supplier who fails in the sampling phase will likely do so with large orders as well. The sample is thus also a reliability test.

What is a Sample: Step-by-Step Request Process

Successfully requesting and evaluating samples requires a structured approach. Below, you'll find the complete six-step process that professional bol.com sellers follow.

Step 1: Product Research and Supplier Selection

Start with thorough product research. Use Boloo's Product Database to identify profitable products with sufficient search volume and acceptable competition. Then, select three to five potential suppliers based on reviews, response time, and minimum order quantities.

Step 2: Professional Sample Request

Send a clear and professional request to the supplier. Specify: the exact product, desired modifications (color, material, logo), desired packaging, and ask about sample costs including shipping. A professional request increases the chance of a high-quality sample and a better price.

Step 3: Receiving and First Inspection of the Sample

Upon receiving the sample, conduct a thorough initial inspection. Check the packaging condition (damage during transport), compare the product with the supplier's product photos, and take photos of any deviations. Document everything - this is your basis for any potential negotiations.

Step 4: Detailed Quality Test

Test the product extensively as if you were a critical customer. Check all functions, test durability, and evaluate the overall user experience. For clothing: wash the product and check for shrinkage and color loss. For electronics: test all functions and battery life. For toys: check for sharp edges and loose material.

Step 5: Comparison and Decision-Making

Compare all received samples side by side. Create a scorecard with criteria like quality, price, delivery time, and communication. Choose the supplier that offers the best overall package - not necessarily the cheapest. Use the Boloo Winstcalculator to calculate whether your margin is sufficient with the chosen supplier.

Step 6: Golden sample approval

After selecting a supplier and making any necessary adjustments, you'll receive a final golden sample for approval. This sample will be the standard for your entire production run. Keep it carefully - it's your reference in case of any quality disputes.

Sample evaluation scorecard: what to look for?

A structured evaluation prevents you from overlooking important aspects. Use the scorecard below to objectively evaluate each sample on a scale of 1 to 10.

Evaluation criterion	What to look for?	Weight	Bol.com impact
Material & finish	Quality of materials, seams, glue work, coating	25%	Reviews, returns
Functionality	Does the product work as described?	20%	Reviews, conversion
Packaging	Protection, appearance, unboxing experience	15%	Reviews, brand experience
Dimensions & weight	Does it match the specifications?	10%	Listing accuracy, shipping costs
Odor & safety	Chemical smell, sharp edges, CE marking	15%	Compliance, complaints
Comparison with competitors	Better/worse than similar products on bol.com?	10%	Positioning, price
Supplier communication	Response time, flexibility, professionalism	5%	Reorders, reliability

A total score below 6 is a clear signal to drop this supplier. Scores between 6 and 7 require additional samples or negotiations for improvements. Above 8, you've likely found a reliable partner.

Common mistakes when requesting samples

Even experienced sellers make mistakes in the sample process. Here are the six most common pitfalls and how to avoid them.

1. Requesting only one sample

Many beginners request a sample from only one supplier. Without comparison material, you can't objectively evaluate the quality. Always request samples from at least three suppliers - even if you already have a favorite.

2. Focusing only on price

The cheapest sample is rarely the best. A €3 sample with mediocre quality leads to higher return rates and negative reviews that cost you much more on bol.com than the price difference with a better alternative.

3. No written specifications

Verbal agreements or vague descriptions lead to misunderstandings. Put all specifications in writing: dimensions, materials, colors (with Pantone codes), logo positioning, and packaging requirements. This protects you legally and prevents disappointments.

4. Skipping the sample process when in a hurry

Seasonal products or trending items require speed, but skipping the sample process is a recipe for problems. Plan your purchases so that you always have two to four weeks of time for samples. With Boloo's Product Tracker, you can identify trends early, giving you enough time.

5. Not keeping the golden sample

After approving the golden sample, some sellers throw it away. This is a costly mistake - without a reference sample, you're in a weak position in case of quality disputes. Always store the golden sample in a dry, protected place.

6. Don't place a test order

An approved sample doesn't guarantee that the entire production has the same quality. First, place a small test order (50-100 units) before making a large order. Test random samples from this batch.

Samples and private label sales on bol.com

For private label sellers on bol.com, the sample process is even more extensive. You're selling products under your own brand name, so quality is directly linked to your brand image. With private label, you usually go through multiple sample rounds: first, a standard sample to assess the basic product, then a custom sample with your adjustments (logo, color, material), and finally a pre-production sample from the final mold or production line.

It's especially important for private label to invest in professional product photography with your sample. Use the photos for your bol.com listing and optimize them with Boloo's AI Listing Generator for maximum visibility. Then, monitor your search positions with the Keyword Verkenner to see how your listing performs.

Sample costs: what can you expect?

Sample costs vary greatly depending on the product type, supplier, and origin. Below is an overview of average costs so you can plan your budget.

Costs	Domestic (NL/BE)	Europe	Asia (China)
Sample costs (per unit)	€5 – €30	€10 – €50	€2 – €40
Shipping costs	€5 – €10	€15 – €40	€25 – €80 (express)
Custom adjustments	€0 – €50	€10 – €100	€20 – €200
Delivery time	1 – 3 days	3 – 7 days	5 – 15 days (express)
Total per supplier	€10 – €90	€35 – €190	€47 – €320

Expect a total sample investment of €100 to €500 when you request samples from three suppliers. This may seem like a lot, but it's a fraction of the potential damage from a failed purchase order. Calculate your expected margin with the Boloo Winstcalculator to determine how many products you need to sell to recover the sample costs.

Requesting samples via Alibaba: practical tips

Many bol.com sellers purchase via Alibaba, the world's largest B2B platform. The sample process via Alibaba has its own rules that you need to know.

Communication and negotiation

Use Alibaba's Trade Assurance for payment security. Pay for samples via the platform (not via direct bank transfer) for extra protection. Always ask for photos and videos of the sample before shipping - this saves time if the product clearly doesn't meet your requirements.

Shipping and customs

Choose express shipping (DHL, FedEx, UPS) for samples - regular sea freight is too slow. Consider import duties and VAT for samples from outside the EU. Samples under €150 are often exempt from import duties, but VAT is always due. Check with the LVB Box Size Checker if the product is suitable for Logistics via Bol.com if you're considering it.

Frequently asked questions about what is a sample

What is a sample exactly?

A sample is a single unit or small quantity of a product that you receive to evaluate its quality before placing a large purchase order. It can be a standard product from stock or a custom-made sample with your specifications.

How much does it cost to request a sample?

The costs vary from free to €200+ per sample, depending on the product and supplier. On average, expect to pay €10 to €80, including shipping, for a standard sample from China. Domestic samples are cheaper (€5 to €40).

How many samples should I request?

Always request a sample from at least three suppliers for the same product. This gives you comparison material and room for negotiation. For private label products with customization, expect two to three rounds of sampling per supplier.

Can I return samples?

In most cases, sample costs are not refundable. Some suppliers will offset the sample costs with your first order if you place an order. Make agreements about this beforehand - it's a negotiating point.

How long does the sampling process take?

For a standard sample from China: 5 to 15 days delivery time. A custom sample with adjustments takes 2 to 4 weeks production time plus shipping. Plan a total of 4 to 8 weeks for the entire sampling process, including evaluation and potential re-sampling.