I use them regularly. Bought a 8800mah battery for my laptop, via an amazon seller. It was a dud. Contacted the seller, jumped through their hoops (no big deal) and they sent me another one, and didn't ask me to go through the trouble of returning the old one.

I generally recommend them, although for some things, they are NOT cheaper. It pays to shop around. I buy computer stuff at times and newegg is often cheaper.

1987 Raider, 346K miles and going strong -31" tires, otherwise stock.
http://tidbitsfortechs.com/
http://actionpcs.com <-- $39 remote PC repair, guaranteed.
How to include pictures in threads on 4x4wire (Youtube video)