Discounts for regular customers

Turnover(month), $	Discount
10000-15000	+4%
15000-25000	+2%
25000-50000	demo price, 0%, Demo price is the price you see when you not logged in to the system
50000-100000	-1%
100000-200000	-2%
200000-500000	-3%
500000+	-4%