I have the same thoughts, prices are crazy but mostly because PS want a big piece of the cake. I try to find modules from other sources, codecanyon is one of them. We used Opencart before and the plugins were so much cheaper.
It is almost hopeless to get refunds from PS, I am fighting one case now and has escalated it to a claim on Paypal, but we will see. Paypal has never been good at resolving issues when it is software and nothing is sent with snail mail.
The developer I fight with just don't answer emails, not a sound. It is a module for 130 € and I don't want to loose them. I had a long conversation on mail with the developer BEFORE I bought, also sent him test files to be sure it worked. And I got back that it was no problem. But when it did NOT work, the support is silent