I saw the same ad a few days before Christmas. Called and talked to a very nice salesperson named Arin Severt. He was great, and put out a great price. Got a 4710, 460 FEL, MX6 cutter and other odds and ends for about 23% off list on the package. They beat my local dealership bids by over $1000, and because I'm across state lines, they aren't charging sales tax. Yes, I know about use tax, but since I can get tax exempt status, it doesn't apply. BUT, I could not get tax exempt status AND 0% financing from my local dealers. The 0% is for residential use, and not for ag sales. Can't mix and match. I tried to go back to my local dealers and work with them. I was willing to pay a little more, but they wouldn't deal at all below their original price quote. This way I'm saving about $2,800 on the sale (including sales tax), and more on interest that I'm not paying. So, I've got my 4710 arriving in a couple of weeks from JD Equipment. My salesperson treated me great, was very responsive, and had great prices to work with. I can only speak for the sales end - not the support end.
Just thought I would offer my experience.