I take Dialyvite. Some is Rx and some is not. I have a $10 copay on mine.
I take the same vitamin, as I told the dietican that my diet sucks. Not much appetite in the summer, plus I absolutely hate cooking for myself.
Also, Hillestad now has Calcium Acetate (generic for Phoslo) at $16.95/200 tabs. No Rx required. So if you have to pay for Phoslo, this might be a good choice.