I have not dealt with that company before but if I could get those prices for used MacBook's I'd quit my job and do it full time. That warranty looks like it adds $300 to the cheapest model they sell. You can find one on e-Bay for much less and you are covered by their buyer protection plan. Buy from someone with good feedback and lots of it and you'll be fine.
I am attracted to their 4 month warranty on used hardware and positive customer feedback.
Has anyone delt with this business before?
Hi recently bought 3 refurbished MAC Airbooks from PowerMax. I highly recommend them. All items were sent as ordered including with new power adapters. Their customer service was great. I even had a few issues with one unit, and they handled the service professionally and transparently.