stuff like this confounds me a little. I guess this is what happens when the hunter-gatherer urge goes out of control, there's no more natural predators, etc.
But seriously, what is the appeal of having that much stuff - unopened, especially? I like old games, and I have a decent sized little collection. A Snes with about maybe 30 games, NES with 40, Genesis with 40 (you see a pattern here?) A Vectrex w/multicart, Lynx with about 20 games, a turbografx w about 40, Saturn with maybe 15?. They're cool and it's nice having them around, cool to look atthe stacks of carts and remember my childhood - the SNES actually gets used more than anything else I bet - and I am not hurrying to sell the lot (believe me, I could sure use the $$!) but I also wouldn't really miss it if it was gone.
When I look at mammoth collections of stuff (DVDs, music, games, etc) it does kinda blow my mind and starts feeling like 'whoa, that collection actually owns YOU" and particularly in the case of "sealed items" which can only be looked at as packaging, not even appreciated for the actual contents. It must become kind of a burden. Especially when it starts becoming quite big and expensive. I wonder what drives one to sell this? The doc gives you 6 months to live, so you start liquidating everything?