The problem is not that you can get it cheaper at a store. Everything you buy at a bar is way more expensive (bars generally aim for the alcohol cost to be at 30% of charged price, but that's on average). What you pay for is the rent, the staff, the owners making a profit and ideally a more fun experience than drinking at home. Now sure, that seem to be on the high end of those margins, but I'll bet you the wine on the menu have higher margin (quick google search shows that St. Francis Cab is $14 a bottle on the internet, they should be able to easily get that for at at least half the price of retail). And yeah, that's an expensive bar as a whole, but I guess that's a reflection of the rent and the general cost of living in the area.
No, the problem with that shit is that it's LOL POOR PEOPLE, with just a dash of LOL BLACK PEOPLE, and that's fucking disgusting to me.
You know they lecture people on the pronunciation of Pho