Amazon is generally good about rebates. I bought a G5 from them, but it did take forever. There was a thread about a member getting a good deal on a
700p through eBay. At the time, I thought it looked pretty shady, but feedback is positive. I checked and they are offering the 700wx at an impossibly low $99. Not sure how they do it, but might be worth looking into. Could save you a few bucks.
Good luck.