Product research is one of the most important parts of selling on Amazon. Unfortunately, many sellers make costly mistakes during this stage.

One common mistake is choosing products based only on personal interest instead of market demand. Another mistake is ignoring competition and entering oversaturated categories. Some sellers also fail in calculating all costs, which leads to lower profits than expected.

Before investing in inventory, always check demand, analyze competitors, and estimate profit margins carefully. Testing products with a small order can also help reduce risk.

Avoiding these mistakes can save time, money, and frustration while increasing your chances of success.

Learn the complete process in our guide on how to find profitable niche products to sell on Amazon.