One of my favorites is Newegg.com (U.S. and Puerto Rico only).  I've ordered from them a few times, and never had a problem.  One time I did have a DOA motherboard, and they promptly replaced it without any hassle at all.  I think its when you have a problem with a piece of equipment that you find out how good a retailer is.  And Newegg often has free or reduced shipping deals on some items.  The only problem is that shipping is per item, so if you buy a rather light item like a cable, the shipping fee might be $5 (I don't know how much, this is just an example), and if you ordered two of them, the shipping would be $10.  Their FAQ says they now reduce shipping for multiple items, but I haven't ordered from them since they started this.  Its a great place for a CD-R/RW drive, and they have excellent prices too.  Not the absolute lowest prices, but they get better reviews than some of the absolute lowest price retailers.
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