Hey guys I need your help because I have been making free programs for a little while. And I would like to ask, how does one find out how much to price for a program?

I recently made a program that helps you with homework and I charge 4.99 Can. I have seen programs on download.com cost up to 60$?!?!!

Basically the 4.99 unlocks more option in the programs and gives access to live help, but I dunno if 4.99 is too much or not enough.

How would you price a program.????