Got this deal from AnandTech forums (thanks Netmamma) but I searched here and didn't see it so I hope it's not a repost.
Basically you can get a refurbished Panasonic Showstopper (same a ReplayTV) 20 hour unit for $229. Then send in the $100 rebate and bring it down to $129. Shipping was $10.95 and tax in FL is 6% so that added another $16. My final price was $248.97 - $100 MIR = $148.97
You can then upgrade the harddrive to whatever size you want using the ReplayTV hack http://replayfaq.reidpix.com/faq.asp?id=80
I called the Colorado store and ordered mine today. They had the 20hr units in stock but not the 30hour units. The 30hr units are around $300 so it's not really worth it since you can upgrade the drive anyways. This link has a list of all the service centers
I have a 20hr ReplayTV unit that I bought from buy.com for $300 a couple months ago and I thought that was a deal. I absolutely love it so much that I took advantage of this deal too and got one for my other TV. I'd encourage anyone considering one of these boxes to go for it, they really are great.