My 2 cents: sell all your AES and console. Use money to buy CMVS and multicart
Case closed
My advice is to get an emulator and save yourself a load of money! If playing the real thing is important to you then either get a magickey or go the mvs route.
Retrogaming is now insane with prices to match and I think it will only get worse to be honest as more people in their mid thirties have more and more disposable income. Its like a nuclear arms race becauase once people have the games there circumstances are less likely to change (older and more financially secure) so they won't sell and opportunities to buy will become less and less. I think prices may only start to decline when people start to die unfortuanately which wil be in 50 years.