That sounds strange. I don't know where you live but I can imagine there being great variations in prices between countries and regions.
Same here, there are a lot of games I want to try but I don't have the time or money to try all of them. I understand you completely.
I did play R/S/E (especially Emerald) a lot when they were new, but yeah, I have no interest in OR/AS. Regarding the Johto games, I quite liked G/S/C until HG/SS existed, the remakes didn't do much for me to be honest. Like you, I don't like remakes that much, though I do like FR/LG. D/P/P remakes will be fun when they happen, I just hope they will make less stupid decisions with them compared to what they did with HG/SS and OR/AS. Like keeping all the Platinum features. Personally I don't see much room for improvements other than a larger regional dex and the improved graphics/physics/mechanics but like you, I can play Platinum just fine (doing so right now actually) and it is awesome, I'm fine without a remake for now
Same here, 5th gen is forever special to me since these games got me back into Pokemon after my worst burnout ever. I don't think I'll ever play Crystal again though (especially since the battery is out on it) but I had more fun with it than with HG/SS, that's for sure.
I don't have an Xbox but I have planned to install some more games on my PC and play through them as well. Play whay you feel like and have fun with it