If you use lots of race gas it is very worth having an NHRA membership. Our local distributor offers a discount and it didn't take very long to cover the fees. They have other affiliations as well if you race or are a fan. The NHRA was easy to sign up for.
I ran renegade 110 last year and had great luck... motor octane is 109 which is almost the same as sunnoco 112, and it was only $377/barrel, my local distributor has it at the pump so you can fill up your own cans or sled or whatever, 24hrs a day which is sweet to. its 6.85 a gallon at the pump