I can't seem to find anything by Warn on their website...
I think I remember the Northridge rep posting that they can't offer discounts on Warn products because they already sell them for the lowest price Warn will allow, and Zoro's discount codes were well below that. My guess is that Zoro was caught selling their winches for less than the minimum price and Warn stopped using them as a realtor. That's just a guess though.