Thanks! I'll set one aside for you (and for you too, BassGuitari).
Now seems to be a good time to pick up an Aquarius from eBay. There have been a few pretty good-looking units going for reasonable prices lately, including this one (not mine):
eBay Auction -- Item Number: 250912359520
AtariAge member oldjd is also offering a tested Aquarius system in the Marketplace—complete with a Mini Expander and hand controller, which is really the best way to experience the Aquarius.
Amazing price on that one. 99 cents final bid.