Hi bburgy. Good luck finding an A1000 keyboard, those are not easy to find. A monitor though, look at the bottom of the A.org home page and look though the links for retailers. The last I looked, the C= store in Boise Idaho had some. Maybe Centcible software, although their service is dodgy sometimes.
Ebay, Amibench, and Craigslist of course are your alternatives.
What do you do with your A500 everyday? :-)