PERSONAL OPINION ONLY!!! USE WITH CAUTION!!!
$3,500 CDN = @ $2,950 USD
If I were buying a used Series I, I'd expect to pay in the neighborhood of $2,500 - 3,500 USD, including power supply and cable. I'd also expect some sort of case, though I would not be hung up on the original case.
If the physical condition is above average and you like the way it plays acoustically, I'd say go for it. I think I've seen the bass you're talking about posted recently and if I recall, it appears to be in very nice physical condition.
You can pick up a rackmount DS-5R on eBay for about $200 - 300 if you're patient enough for one to come up. (there's one up now, actually, but it's in the UK). You can get a cord made by someon here at the Alembic Club. You can also buy a new DS-5R and cable from Alembic. I'll let Mica or Val quote you a price there.
Oh.....and Welcome to the Alembic Club!!
Peace,
James
(Message edited by malthumb on September 05, 2005)