Well let's do the math. If you're using magic hit-you-in-the-teeth ice balls you're pouring something stupid like Pappy or some pompous scotch. You're buying the bottle for what? $1k? And you're selling it for $200 a shot?
Let the night roll. Let a few high rollers get a little drunk. Pull up your fancy ice squisher and get a cube rolling. People ask. What the hell is that for? Well, you see, it's for super-top-shelf shit. And it's dope, drunk people.
So now you're selling that $200 shot. And you're putting it in the $1500 ice squisher your boss bought. And you're making a 20% tip. That squisher just made you $40.
I be squishin' ice all goddamn night, yo.