I have brand new gen. 2 Palm Centro (Green) which are far superior to the 1st gen. Centro. Selling those at what I bought 'em for, thinking they'd be good forever for my plan, $99.99, plus $5 for insured UPS shipping.
I'll include a copy of USB modem for free as well to use it as a free modem for your computer. And I can give you a registered version of the excellent Luach program with zmanim, which I only wish existed for Android...
These work on all Sprint plans with no extra fees.