A lot of times a "freemium" application is really just developers rolling their own "try before you buy" solution. A few bucks makes sense for something trivial

A lot of times a "freemium" application is really just developers rolling their own "try before you buy" solution. A few bucks makes sense for something trivial, but if I'm charging north of 5$ for something that will be in frequent use (say, an expense tracking app), I completely understand that the user first wants to verify that the app fits to their needs, something you can't do from looking at a few screenshots.