Feedback for potential marketplace listing?

I am not sure if I should post this here, or if there is somewhere else suggested. I want some feedback on a service idea before I spend the time and money creating a nice looking marketplace thread. Wanting feedback on if people think 1 of 2 services is a good idea or not.
Should I ask here? Or are people just going to say "pay up and find out?" Hope to get good answers :). If so, I will post my service idea here, or in a new thread in the lounge (or another forum if suggested)
thank you…

Feedback for potential marketplace listing?