buying computer case use

is this good deal a corsair 900d for 150 dollars and use from ebay and from any store it kinda 350 dollars?

I'm lost... A used 900D for $150 is a good deal, depending on it's condition of course. I would never own a case that large because it won't fit on most desks. Do you really need something that large?

I've had relatively good luck purchasing used cases (1 or 2 in the past couple years). The occasional missing this or that, but nothing too serious.

That said, mine have been with cases which retail for $150 or less. Not sure I'd risk it with a $350 case unless it was so thoroughly documented that you had no doubts as to its condition/contents.

Remember, that though you are protected through PP/eBay and can get your money back pretty easily if something goes wrong, that doesn't cover return shipping, which (I'm guessing) would run in the neighborhood of $50-60 with a 900D.

EDIT:

And +1 to pb's comment on size. As a recent convert to SFF builds, I can say that having a smaller case carries a lot of perks and you can usually squeeze most of the same stuff in there. Unless you're going for a crazy WC build, I don't know that a case the size of the 900D is worth space it'll take up.