For what it's worth, that price on the rebuilt hydrovac is right in line with what I paid for mine. Luckily my core was good, the core charge was almost as much as the hydrovac.
Scott


1947, 1950, & 1952 Chevrolet 1/2 ton
1952 GMC 450 series Cab Over Engine
1946 Chevrolet 2 Ton