I agree. I think a tool like this could be useful if it allowed you to go from general area of interest like "backcountry skiing" to specific items/terms/products that are generating a lot of search traffic from shoppers at the moment "black diamond carbon megawatt ski." Such a tool could be used to suggest topics for affiliate blog posts or even items that should be stocked in online stores.

Instead I got terms like "backcountry gear".

The combination of only three test searches and a limited number of search results left me with the impression that it really just mapped general terms to related general terms which isn't particularly useful.

Perhaps focusing the ranking more on conversion would bias it more towards specific terms.

I agree the "trial" was way to short to actually test it out and see if it was useful enough to pay for.