The site mentioned above: http://www.gravely.com/pages/fleetsavings/index.html says at the bottom that all items must be on the same invoice and purchase by the same single buyer, which implies that a year's worth of stuff doesn't count. It also says 15% rather than 20. Maybe the policy is changing, but I've heard about four different versions of this today alone. When you get an authoritative answer, please let us know. I could possibly get to 10,000 before discount, but not 12,500 before discount.