What’s Up With Diesel Here

What is up with Diesel prices here? It is a good $0.50 more expensive then regular gas. I thought it was supposed to be cheaper normally… Of course a diesel car is probably still cheaper over the long term, but still…
EDIT: While we’re at it. Where is the Ultra Low Sulfur Diesel? Most of the local gas stations still have diesel that would be illegal, and apparently potentially damaging,to put in your 2007 and later diesel car.