Both the Sam's water and soda machines have been out on the sidewalk for several months at the store where I work.  The prices went up to 40 cents some time ago.  Still have Pepsi (bottles) and Coke (cans) machines.  My thought it is that what we have in the breakroom for machines is driven by whatever return the store can get from them.  I'll use them, but not everyday.  I like my coffee and the price is still better than the machines - free.