http://www.uship.com/profile/dvtrans/ DVTrans was the carrier I used. I'm pretty sure they weren't the cheapest, but were in the ballpark with the others.
One thing I would caution you about, is that if you're in a real hurry and need something on a specific day, then uShip may not be the right place for you. Most of these guys are on the road for a week or two at a time, and are constantly zigging and zagging to pick up additional loads along the way. My scooter took 3 days or so from Buffalo to Boston, but it didn't matter much to me. I think he went from Buffalo to somewhere north in New York, and then to Vermont, New Hampshire, Rhode Island and then back to me.
Since I only used them once, I can't say much else about uship, but that these seems to be a couple of ways to arrange a carrier and price. I don't think I went with a low price auction, but rather I put it out there and pretty much got the price I expected to pay.