When I went to pre-order on the 14th I looked it up and the Palm Pre was $72. Now it's down to $55. I'm going to ake it into Sprint, who will buy it back for $63. https://secure2.sprintbuyback.com/consumer/
Bestbuy has this program as well. I've had both my 16GB white iphone and my wife's 8GB black (Both are 3G) pre-screened for trade in. Getting (drumroll) $187 for the 16GB and $172 for the 8GB. Both are in perfect condition with all accessories. Blew my mind and I'm still somewhat doubtful that it will really happen.
Unless you despise dealing with craigslist or ebay, I can almost guarantee you that most devices such as the Pre, Hero, and any Apple products will net you significantly more money on those websites.
Radio Shacks buy back prices seems like a joke on cell phones.....Best buy looks to offer more for your device and selling private will beat them both out.
