I'm not too worry about the 15 days return policy. It's the warranty. Usually you get 30 days warranty. If you are lucky, you get 90 days. The problem is that this is too short of a period to determine if your items will break down. Like some of these guys said, it's either a hit or miss. If you miss, that's an extra $100 plus you wasted. Like my mobo, I saved $20 by buying a refurbish, but when it died, I actually lost $80. In order to save $20, I end up wasting $80.
With full warranty, you can just send it back to the manufacturer, and they will send you a brand new one as replacement. Video cards usually carries between 3 - 5 years warranty. Some even give life-time warranty on it.
Some of you said you receive items in a white box, I think you have mistaken the difference between a refurbish item and an OEM item. For refurbish items, if they never mention it, you WILL still get everythiing in the original box, CD, cable.....etc. Just like when you buy retail. The difference between retail and refurbish......., refurbish is a damaged item (or open item) restored back to factory specification. For OEM, usually the retailers buy them in bulk, just like Dell, Compact, IBM.......etc. do. For these computer retailers, they don't need the retail boxes because they are selling the whole computer unit. Without the nice retail packaging, they pay a lot less. Newegg also sell OEM items, which is equavilant to brand new item. The only difference between OEM and retail......, retail comes in the nice packaging just like you buy the items from best buy, compusa......, while OEM comes in a with the item in a white box, probably with the driver CD.
If it's OEM, by means go for it. But as for refurbish items, you are just taking your chance.
Well, its up to you. Good luck to you, and keep us posted regarding your decision.