I sell the same products retail and wholesale. I'm offering "buy 3 bibs, get free shipping" to retail only (I have a blank discount set up that does this based on cart total). I don't want to offer the same discount to wholesalers, who will obviously always be buying more than 3 bibs at a time, at about 50% of the retail price.
How can I set up shipping to accommodate the two kinds of buyers?