Mr. Supps has great products and is second only to NTBM in my books as far as the products I use on and off cycle. However the sale structure pales by comparison. Loyal customers at NTBM get 15% off everything all the time by using the normal codes shared here. Then there are periodic sales of 20-30% like this week. 20% off one particular item each week, not one of which has been something I need/want/use, doesn't make me want to set aside money for a special purchase.
Just my two cents of constructive feedback as a customer.