where is the cheapest place to buy beer in fairfax

A major grocery store (i.e. giant)..

I got some beer mang. I brew it in my bathtub. I only sell it by the gallon milk jug. $1.25 per gallon, and you have to supply the milk jug.

Just buy in volume. Kegs cost less than equivalent volume in cans or bottles.

If you want a 6-pack or a case, Rite Aid works for me. Limited selection, but Im
Miller Lite usually, Heineken once in a while.