Space is a problem, I keep running out of walls to put shelves on :)
I've started putting things in suitcases under the bed.
Video games are extortionate, except ps3, xbox360 games, which are currently pretty cheap.
I got lucky with mega drive/Genesis games when I found a stash of them in a charity shop for next to nothing a few years ago, unfortunately that only happened to me once, I think recently charity shops check everything on eBay to price stuff, so you sometimes see crazy prices on old rubbish because "it is on eBay for that much", sure but it probably never sold at that price. :)