CharlieS
GOLD Star
I suspect the skilled labor involved is about the same and the materials cost nearly the same. I don't find in unusual that they cost the same.The fact that the price is the same for a 12 gallon and a 40 is the truly frustrating part
12.5 gallons gets you a lot of extra range, and avoids a lot of extra cost associated with spare relocation.
The plumbing and electrical are the same, so you could always upgrade the tank itself later if you found the small tank to be insufficient.