In 2007, I bought 25 drywashers from Bret Chilcott at AZ Desert Gold, for our gold prospecting school in Arizona. The units are all aluminum and steel, Open up and fold up quickly, and only weigh 13-pounds. The vac motor and tubing is all contained in a five-gallon bucket (total 6-pounds) that doubles as a crack and crevice vacuum. Last year when I retired, all 25 of them were still in great shape, and when I sold them I got back 68% of their original retail cost ($495.00 complete)!
Modern materials are great - but expensive! What you must have in a drywasher is TOUGHNESS and RELIABILITY. I backpacked the little Chilcott drywasher and Vacuum into the Bradshaw Mountains quite a bit with no problems at all. Spend your money ONCE. This is not an ad for Bret, he has stopped manufacturing except for large custom jobs, it is a warning to those greenhorns that read descriptions that are too good to be true and spend their money foolishly on the "IDEA" of "New and Improved." New is not always improved.
SHOP AROUND!