Just last year--about this time last year, actually--there were 3 for sale in quick succession to one another. The one looked like a mint northfield. Its not often i see older machines that have a shiny cast iron table. I was blown away it took a couple weeks to sell, and it was in the $400-700 range.
I watched a relatively close auction(2 hours away) and a 28" wadkin sold under a grand, i think. The generic steel frame bandsaw was definitely under a grand. It wasnt SCM or any other maker i recognized. Very few people want to move these tall saws. In my case, my 20" saw scrapes the ceiling joists in my basement.