How much do you get for a vodka on the rocks?

Their house vodka is Tito's. Seven dollars for a mixed drink. Don't know price on the rocks but probably add 2 or 3 dollars.

I believe i paid $9.00

Not sure on a specific price . Bought 4 drinks sparkling water, apple cider beer, gin and tonic, rum and coke and got change back on a 20$ Price for all was shocking had to ask if it was right .