Free: Contests & Raffles.
I did Dave Smith and picked out the rig I wanted and the price I was willing to pay before I ever drove over to get it. I was happy with the price and experience. During negotiations the rig that I wanted came up as a one day only internet deal for a few hundred less than what we had negotiated to. When I realized that I offered them $200 less than that for trying to sell it out from under me and they took it, said it was a clerical error.