We were lucky and the used hose we got off the wrecked Dodge had the pressure switch still on it. They only charged us 16 bucks for the entire thing. The first place we looked and they had what we needed for not too bad of a price. I put the new style R-134a couplers and receiver/dryer on it last year so I could run the newer stuff. The neighbor of ours charged it up for $24. I think he said he put 2.5 lbs of freon it in.