Bought a WEN 8-Inch Spiral Benchtop Jointer last year - very impressive use out of it, milled some rough sawn 8/4 Red Oak on it many times. Some folks might scoff at a WEN but if they saw results, they might change their mind. That jointer can be bought for $429.99 right now, 2 year warranty also
I go round and round over selling my Ridgid 6" jointer and buying one of those - or - investing close to that amount & sticking a spiral head in the Ridgid.
As far as the used market - there's a 6" Powermatic listed for $1500 and a 6" Jet for $799. A couple of benchtop Craftsman beat up pieces of crap 4 1/2" for about $300 each - give or take $20.
Pretty typical for around here.
"Life is what happens to you while you're busy making other plans." - John Lennon