Why would they lower their prices. Race fuel is almost all additives. The burn rate and energy available in a quality race fuel is very consistent form one day to the next. This is what is costly. Racers that build engines to take advantage of these fuels don't really care about the cost of the fuel. It's a drop in a bucket compared to the remainder of the program. It's not hard to find drums of Sunoco standard for around $500. Way more than most on here would ever need.
May have something to do with how it is sold. Gas at the pump is sold based on what it will cost to replace it, not what it cost when it was made and put in the store's tank. With the VP and such you are still paying for what it cost when it was produced and packaged.
What I don't understand is why premium is still 40 to 5o cents higher than regular unleaded.