I really wish I could give you the details of price and what not. I'll tell you where I got them, my garage (hubbys work crap) free
he's a plumber maybe check some plumbing wholesalers? They come with their own mounting systems and even a wrench like tool to open the canisters once they're mounted. I'll ask him more details after I've got these set up. Right now I'm working in ninja mode
I haven't configured what media to use as of yet just gathering the items I think would work first.