Last December she needed her gall bladder removed and I did not have all the funds for it, so I sold my NES and SNES collection and completed her operation, its things like these that I can be happy about... I now have a NES and SNES but no games hahahahaha...
Have you considered emulation?
I have an original xbox which is now a NES, SNES, Game Boy, Gameboy Advance, Atari 2600, Atari ST, Commodore 64, ZX Spectrum, Amstrad CPC464, N64, Sega Master System, and Sega Genesis.
I worked out that it cost me a total of $67 to buy everything I needed, and emulation is flawless for the most part, especially the console games.
The advantage of using an xbox is that the people who coded the emulators knew exactly what hardware they were dealing with, so for the most part everything just works 'out of the box'.
Plus, used original xboxes (xboxen?) are dirt cheap nowadays.
I made a launcher that boots into a fullscreen photo of each system, all you do is cycle through to the system you want, select it, and then select the game you want to play.
My wife complained when I started buying stuff for the project, but now I have it all set up properly, she plays on it more than I do!