B2B Wholesale, Volume Discount

Very easy to set up, and live chat was very responsive to the couple of questions I had (even available on chat at 1am!). Perfect streamlined app for setting up wholesale customers, and actually has a couple of features like customer registration forms that the paid apps don't have until you pay for their higher-tier plans. I definitely recommend it, we'll be using this one for a long time, has everything we need.