These guys are not listed on pricegrabber.com, they are listed on pricewatch.com, but pricewatch is lame in that it does not have any reseller ratings or reviews available.
Their RMA procedure is TERRIBLE, it is NOT automated so you have to wait for a person to send you an email with an RMA number and instructions on where to ship the return. you must return items within 25 days of the ship date, it took me 4 days just to get an RMA number.
They require you to supply a serial number for returned products, for me this meant having to open the box to get the number off the motherboard. These guys are the only ones I've run into that require a serial number.
On top of all this, their customer support staff is rude. I would NOT purchase from them again. Save yourself some grief, buy from a reseller listed in pricegrabber so you can see their rating. READ THE REVIEWS, especially the bad ones. I have used newegg and yesmicro, they're better than CDR Express, but watch out for newegg's return policy on CPU's... 7 days, and if you use 3-4 day shipping you may get burned.