I would suggest bookcloseouts.com for a small but ever-changing selection.
They have prices similar to Amazon's used and eBay booksellers (they are one) and the do combine shipping very nicely, something you won't get at amazon and hit or miss at eBay.
I have bought a LOT from them before and will again, I suppose.
One thing to note is that if you get an account started, if you add something to your shoppinf list, you can see their remaining quantity (so you get a better idea of how much time you have before it's gone), and also, it will stay there after you leave and when you come back, much like Amazon's wish list. I browse and add until I have enough to get economical shipping, but I also buy a lot because I resell cookbooks at eBay myself. The extra cash helps feed my cookbook addiction.
There's no such thing as a little garlic.