Buy Box Strategy: How to Win It on Trendyol and Amazon

The Buy Box is the offer that leads the product page when several sellers on a marketplace sell the same product; it is the offer a customer buys when they click "Add to Cart." On Trendyol, the Turkish marketplace, when a customer searches for a product and clicks it, the product of the seller who won the Buy Box opens first. Price alone does not decide the winner: alongside price, Trendyol takes into account seller rating, fast delivery and free shipping options, campaigns on the product and the store's operational status.

So the way to win the Buy Box is not to cut prices blindly. It is to set a floor price that protects your profit, strengthen the non-price criteria and manage price within those limits with automatic rules.

How does Trendyol decide the Buy Box winner?

According to Trendyol's Seller Information Center, the Buy Box is the system that chooses, from among sellers of the same product, the seller who will bring the customer the most benefit based on algorithmic criteria, and moves that seller's product to the top. Each criterion in the calculation has a certain weight:

• The product's price
• Seller rating
• A fast delivery option on the product
• A free shipping option on the product
• Other campaigns on the product (for example, a discount above a certain basket value; the depth of the discount matters)
• Operational status (orange status pushes you down the ranking; red status excludes you from it entirely)

Trendyol states clearly that offering the lowest price does not mean you will always come first in the Buy Box, because non-price criteria are also taken into account. According to the same page, newly opened stores that do not yet have a seller rating can also win the Buy Box.

Do not confuse the two prices you see in the seller panel. The Trendyol sale price is the price you set for the product; the Buy Box price is the price of the offer that won the Buy Box for that product.

How does the Buy Box (Featured Offer) work on Amazon?

Amazon now calls this area the "Featured Offer" and defines it as the area at the top of the product detail page where customers choose Add to Cart or Buy Now. In Amazon's article for sellers, the main criteria are: competitive pricing, fast and free delivery, customer experience (the right product, authenticity, accurate charges, delivery without damage) and stock. An offer that is out of stock cannot be featured.

The logic is the same on both platforms: the marketplace wants to feature the seller its customers will not complain about. Price is only one part of that calculation.

What should you improve besides price?

Seller rating and operations. Shipping orders on time, keeping cancellation and return rates low and answering customer questions quickly directly affect your rating. On Trendyol, an orange operational status pushes you down the ranking and a red one removes you from it, so this area comes before price.

Fast delivery and free shipping. Both are among the criteria Trendyol lists. Building the shipping cost into the price and offering "free shipping" can create a stronger offer for the same total amount.

Stock continuity. A product that runs out of stock loses its offer, and when it is restocked it competes again on rating and sales history. If you sell across several channels, stock syncing is critical here; we covered it in our marketplace inventory management guide.

Campaigns. Trendyol says campaigns on the product and their discount depth are taken into account. Treat campaigns as a lever for the Buy Box, but never take them below your floor price.

How do you set up dynamic pricing and automatic repricing rules?

Dynamic pricing means updating price automatically with rules, based on conditions such as competing offers and demand. On Trendyol, this is done with Buy Box rules in the automatic pricing area under the Product tab of the seller panel. According to Trendyol, you can define change rules within criteria and a price range whose limits you set. On Amazon, a similar tool (Automate Pricing) lets you create rules either from predefined options or with your own parameters.

Before setting up a rule, do this calculation for every product:

1. Floor price: Add up product cost, marketplace commission, shipping, packaging, average return cost and payment fees, then add the lowest profit margin you can accept. The automatic rule should never go below this price.
2. Ceiling price: The highest price to move up to when there is no competitor or when you hold the Buy Box. Without a ceiling, the rule stays at an unnecessarily low price after a competitor drops out.
3. Step size: How far below the competitor you go. Very small steps can turn into a price war in which two automatic rules pull each other down cent by cent.

A mistake we see often is defining a single rule for the whole catalog. For best-selling products with many competitors, price is more decisive; for niche products, delivery speed and rating come first. Split products into groups and give each group its own rule.

How do price changes interact with Turkey's discount rules?

Because automatic rules change prices often, be careful when showing a "discounted" label and a crossed-out price on products sold to consumers in Turkey. Under an amendment to Turkey's Regulation on Commercial Advertising and Unfair Commercial Practices that took effect on 1 August 2026, the pre-discount price in advertisements for goods is the lowest price applied in the ten days before the discount begins. The same amendment states that for a seller selling on several channels, the pre-discount price is determined only by the price on the channel where the discount is offered; the price on one channel cannot be used as the basis for a discount on another.

In practice, this closes off raising a price for a few days and then showing it as a "discount." When setting up automatic rules, check how crossed-out prices are displayed against this rule; where you are unsure, ask your legal adviser.

When is it right to give up the Buy Box?

You do not have to win every Buy Box. If a competitor is selling below your floor price, following them means losing money on every sale. In that case it is healthier to give up the Buy Box and protect your margin, sell the stock through another channel, or differentiate the product as a bundle or set.

To make that call, track three indicators together for each product: Buy Box win rate, net profit per product and sales velocity. If the win rate is rising while net profit falls, your rules are pulling you into a price war.

Buy Box checklist

1. Has a floor and ceiling price been calculated for every product?
2. Are seller rating and operational status monitored regularly?
3. Have fast delivery and free shipping options been considered?
4. Is stock synced across all channels?
5. Are automatic rules separated by product group?
6. Do crossed-out prices comply with the ten-day lowest price rule?
7. Are Buy Box win rate, net profit and sales velocity reported together?

The quality of your listings also affects conversion; we gathered the title, image and description side in our marketplace product listing guide. If you want to manage your marketplace operation with pricing, advertising and listings together, see our marketplace management service, or get in touch to talk about your situation.