I'll help, how much do YOU get k rend for? Nick may get it a few quid cheaper cus he maybe uses more than you. Spunky may get it even cheaper. how much do you pay? Then work out how much you can do in a day. Bearing in mind you have to scrape yesterdays set in the morning or late the same afternoon. Then work out how much there is to do. how many days it'll take you. And how much you want a day. Add your days and all mats then divide it by how many metres and.....tadaaaaaaa! You have your price.