Paraharaha: Instead of complaining, you could have just asked the community what possibilities there are.
This is sometimes the more charming way. :-)
apertotes: Why wouldn't I complain? I'm not a parasite. I've spent hundreds of dollars here. I do not want this site gone for lack of revenue. And I am certain that not having a sort by price or discount in their store is costing them sales. Just like removing classic versions when they release a NEW FASTER BETTER UPDATED ENHANCED EDITION. My posts are useful, unlike those that only write to insult as if they were offended by my trying to improve the site.
I am not telling that you are wrong. And im not saying that you are a "parasite" - i would never do that. I was trying to help you with some hints. :-)
But it´s one way to just ask kindly community if they are aware of solutions/workarounds...and it´s an opportunity to open a ticket and raise your voice there. It´s not common, that your criticism will be heard here in forums from gog. And you give them the chance (by opening a ticket) to improve their service. At least thats all you can do. If they prioritize this issue that is up to them. Don´t take it personal - this is just my opinion, i am trying to help. :-)