Check out Camano 31s, primary model is a flybridge single engine diesel. Prices have held up well over the long history of the design - I think oldest year model was 1989 or so, last around 2007. Helmsman version came along later, much higher cost, added something like 2,000 pounds extra displacement on essentially the same hull, but with upgraded interior, hinged radar arch, etc.
Adequate inventory on Yachtworld on both coasts at present - numerous price reductions in the last year. Active Trawler Forum link, "Helmsman/Camano". Two Owners' Associations - East Coast Camano Owners Association - not sure if that one is still active - no response from my last attempted contact, and a Pacific association, too. Your yacht broker can provide recent closed sales info, too, so there are plenty of sources to check out price trend on your coast, regional market.
Trend in prices is clearly softening following firmness throughout the Covid period, but in general reflect the quality, durability, high functionality and durable good looks. Seems to me that the current market prices are on the long term trend line pre-covid, with inventory close to zero in the Covid Peak with firmer prices, and inventory and prices now back to a more normal trend line. Value retention has been very good over time, clearly better than most boats in this size range, in keeping with durability, no exterior wood, classic work boat styling, flexibility of dual steering stations. Variance between asking prices is probably mostly a function of engine hours, generator or not, electronics package, age.
Have fun boat shopping!