In SC you just pump what you want and pay for it. No questions asked. The price difference is not huge, but I haven't compared lately. For me the price is not significantly different enough to make a special trip just to get off-road. Fortunately there is a reliable source of off-road on the way from my house to my property. It has high turnover and I just fill up my cans and throw them in the back of my truck.
I think it is a little silly to criticize someone for not getting 'home' delivery. As Mad pointed out so sharply in another post, the price, policies and schedules of fuel suppliers are different from location to location. For those of us with low consumption the price and hassle might not be worth it. I'm currently looking into it now and it doesn't look like it is going to be worth it. It looks like it will be easier to take drums to him, have them filled and then carry them back to my place.
Also, I think the issue of bad off-road fuel is valid. I have been warned by a number of locals of several places to avoid. Mostly local crossroad filling stations with old, nasty looking tanks and low turnover. The fuel they get new might be as good as anything else but once its been in their tanks it isn't. So it seems wise to be careful who you buy fuel from regardless of what type it is, which is just common sense of course.
Now, here is a question. If I get some drums for diesel I will likely move them using a barrel strap. Can you move loaded plastic drums this way, or just the steel ones?