That is actually the one I am was thinking.. I found a reseller that has the D-7, caster kit, drip trays and jack trays for 1768 + shipping, no taxes. Problem is they don't allow tractor trailers in my neighborhood and I don't have a trailer to go get it at the freight dock.
Costco sells this same unit for 1899 shipped but I don't think it comes with the casters and I would have to pay tax on it. But I beleive it can be drop shipped to the local warehouse where I could go and unpack it and put i in my very large SUV.
A couple of trips later I am done.