Don't buy the re-releases if you've already played them. Keep your original hardware and software.
Xbox did that from the middle of the Xbox One gen only. Nintendo have a long history of providing back compat (GB to GBA, GBA to DS, DS to 3DS, Game Cube to Wii, Wii to Wii U).
The games cost a lot because they are very good and continue to sell at full price for years following release. The benefit to that is you can sell them on for only a minor loss when you are finished.
MS nickle and diming? Are you real? Xbox Live Gold, 360 Wi-fi adapter being sold separately, 360 HD DVD add on being sold separately, locking Netflix, free to play games and cloud saves behind Xbox Live Gold for the vast majority of Xbox's existence, DLC crap thrust in to nearly every major first party release for years, pay £30 for a deluxe rental game pass upgrade for a game you don't own for 1 week early access.
Good grief.