Air suspension

[Chris]

Getting ready to have some air suspension work done. A recommended
shop in Tampa that works on large trucks. The owner stated that to
change out an airbag would take at the most 6 hours labor at $50.00
per hour and if I need an airbag, they can go for about $275.00 a bag.
Does this sound right? The labor rate sure does but the part cost
seems high. I do have a new extra bag that came with my coach. I was
going to use this bag. It is dated from 2000 when the prior owner
bought it. Might just be a valve or connection... Of course they have
no problem using my provided part and actually encouraged it as they
would have to hunt the new part down. Any one out there have any
advice on this kind of repair? Are all the bags the same used on any
83 FC35?
Thanks
Chris Reed
83 FC35 SB
Plant City, FL
Leaning to one side due to air leak