I looked all over for my flex, ebay and craigslist were nothing but price gouging losers just trying to make money. I called everywhere around and they were back ordered for 8-10 weeks. Oddly enough, I knew Verizon carried the Fuel so I figured what the hell, I'd check. I had my flex the NEXT day from them for the regular price. Two of my friends ordered them too from Verizon.
I just checked, looks like they still have them in stock.
http://www.verizonwireless.com/b2c/store/accessory?&action=accessoryDetails&accessoryId=61592