Cost of Black Label?

[Raz]

You guys are probably getting these questions all the time, but i was wondering, if i had a wine/booze store and bought say 20 bottles of Johnnie Walker Black Label, what would be the cost PER bottle?

I know i bought one from a regular booze store for about $33 for 750ML size, so i was wondering how much would a booze store in NYC make per bottle. Thank you.