$4 a can.I have 9 cans.  I bought a lot when i swapped over last year from
r-134a.  I gotta say it worked well for me here on the coast of
SC....................got my van down to the 70's when it was a 100
outside................

Adam P
Charleston,SC     Coburn, WV
70 Single Cab "Whitey"
74 Beetle "Ol Yeller"
73 Transporter (STILL at paint shop)
1988 Vanagon Wolfsburg
1976 Transporter (New CA bus)
1974 412 "Goldmember"
1972 VW Super Beetle