None of my eBay Pismos have cost more than $75, and most had working batteries and AC adapters. Keep looking. There is a 500mhz one on there now with no price reserve that looks clean. RAM is cheap, about $25 for a 512MB stick.

Or, this one...

http://www.ebay.com/itm/G3-PowerBook-APPLE-14-1-Laptop-500MHz-512MB-20GB-Complete-Vintage-Working-/260911378994?pt=Apple_Laptops&hash=item3cbf87b232