Not sure if a bug or intended, but "get a beer" at the pub costs you nothing, while "have a beer" at home costs you 20 coins. The cost should be probably comparable, otherwise there's very little point to the latter.
That's good to know :> While at it, a related observation, if you don't mind -- it currently takes ~5 beers for your character to get the "drunk face" and up to 10 for the "fully smashed" swirls. Aside from potential cost and time needed to reach this state (without cheats) this is quite at odds with your physical size and the character herself noting she's (now) a total lightweight when it comes to drinking; as such, it might make sense to increase the effect a beer has on the drunk state -- e.g. doubling it would result in getting drunk in 2-3 beers and smashed in ~5, which feels about right?