I live a couple of states over from Messick's and just ordered parts from them. I was going to order SUDT2 from them, but the shipping quote was very high. I removed the fluid and the shipping for the parts was actually cheaper than I had expected. I tried to find a cheaper way to ship the fluid but shipping was always expensive. My dealer is about half as far as yours, but it made financial sense to just make a day trip out of it and go pick it up. I stopped by some other stores in the area to make the most of it.
If you have other farms around, maybe ask what they do? I imagine they would have the same issue. Could possibly go in on an order together and split the shipping?