by Jim » Mon Dec 28, 2009 10:52 am
There is not any functionality built in that would give that kind of discount. The Rewards program will allow you to give a product as a free reward when X number of products are purchased but not a $ discount.
You could give coupon for $50 off when they purchase X amount but that would be something that you you have to do manually since there is no built in way to do it.