My boat is an older DS1 - not exactly sure of the year, but the sail is #847 and I think that's legit. The features match boats from the era. I got the boat (floorboards and coamings needed refinishing, but otherwise in pretty darn good shape), sails (older main, newer jib, new spinnaker), trailer (rough shape), '83 Evinrude 4HP longshaft (got a steal on that), brand new boom tent, and various accessories including a spring -loaded motormount.
$800CAN for the lot. It had been sitting on the trailer for years, I passed it by every once in a while and finally just knocked on the door. Very long and interesting story short, I got my boat.
Of course like any good boat owner I have upgraded/improved/made quite a few things to fine-tune it to my needs (OK, wants). I bought some new blocks for the mainsheet and jibsheet rigging, made my own boom vang and traveler (my boat had the wire type), tiller extension, topping lift (worth it's weight) etc. I don't have a running total for the additional costs (including PFDs, paddles, new gas tank, trailer hitch, emergency room visit for piece of metal in my eye acquired while installing trailer hitch, etc.) and just writing this scares me a little

Maybe $600~$800?
But everytime out it's worth it.
BTW, this website is an outstanding resource, worth it's weight too...