How to Find Signals in Marketplace Platforms

Repeated product types
When many similar products exist, that usually means buyers already understand the problem and are spending money to solve it.

High review volume
A product with many reviews usually points to ongoing demand, not random interest.

Buyer language
Look for phrases like “I needed this,” “this saved me time,” or “I was looking for something like this.”

Complaints and feature gaps
Low-star reviews often reveal what people wanted but did not get.

Most people look at the top listing and assume the demand is obvious.

That is not enough. The stronger signal usually comes from the review section, especially the negative reviews.

If buyers repeat the same complaint across multiple listings, that is often a better signal than the sales page itself.

Imagine you are researching planners, organizers, or digital productivity tools.

If many buyers say things like “I wish this was simpler,” “too many pages,” or “I only needed one section,” that points to an opportunity.

Not because people like planning, but because they are still looking for a cleaner solution.