hey, find a supplier and do a spreadsheet working out how much it will cost for each amount of hair 150g, 175g, 200g etc and include columns for cost of beads, postage and chair rental (if you have this), add these together to find out how much your costs are. Find someone who does extensions close to you and find out how much they are charging for each amount- compare what your costs are to how much they charge & this will give you an estimate fitting fee. then id say price yourself slightly under them or in between other extensionists in your area. I dont charge for the amount of time - i charge a flat fitting fee on top of each amount. I don't know if that makes any sense at all!! sorry, just tried to explain how i did mine as i found it really hard at first x