Ah, but with different sellers, you'll have to give all of them at least 1 vodka even if the part isn't worth 1 vodka, can't exactly give half a vodka can you?
So here's what you do. You get 10 vodkas out of your cellar/vault. Then you grab 40 empty vodkas from your bin outside...
Eh, I only have a laptop. Just a bit scared that it will die a horrible death and I won't be able to work anymore.