M&M's World . . . . .?

Curious ques. about M&M's World. I remember going in 07 or 08, and in one of the levels, at the back, was orted peanut M&M's, in just about any color. Well i'm going back, and i wanted to know, does anyone know how much thay charge by? Do they charge by the pound, and if they do, how much? Thanks