I'm in Utah, not Seattle, but - last year when I needed new shoes and magnets for my 19-foot Prowler, I found that I could get all new axle kits, with complete brakes, bearings, springs, etc - all but hubs/wheels/tires, for less than $500.
The shoes and magnets were going to be maybe $250, just for the parts. Original brakes were an odd size, making parts more expensive. Brakes couldn't be unbolted and replaced with complete units, because they were welded on - Yuk!
I had to install them myself, but what an improvement, at a very reasonable cost. The new bearings and brakes are a bit bigger, and all work perfectly now.