I added an A500 (1.2 with 512K expansion) to my present collection during December 2003.
I bought a Philips 8833-II s/h, and the A500 was included for FREE. The video cable provided had the wrong monitor connector but, as luck would have it, I still had one with the correct connector in its bubble-pak after buying THAT 12 years ago!
(NB- I had sold along my original A500 about 1996 after I acquired a Hand-Scanner with HDrive-installable driver software, and could fully move to the A2000/030)