John, if you're looking for a keyboard that feels like a piano and has 88 keys, I'm afraid that your price range isn't nearly adequate, very likely even for a used bargain. However, if "synth action" and fewer keys (61) will do, I'd suggest looking at a Casio CTK-900, which retails for about $200. Besides piano, this keyboard has some decent emulations of many other instruments. The Casio WK-3200 has 76 keys, the same "sound engine", and some features not found on the CTK-900, but retails for about $300. Here's a link to these units; there are demos there you can listen to: http://www.casio-europe.com/euro/emi/highperformance/

Best of luck in finding something that fits your needs.

--Barry