My local supplier has a 50% synthetic blend CJ-4 15w40 under their own label (Allied Oil and Supply) that I get for $9 a gallon... delivered. At least the last time I bought some about a month and half ago. Check with local oil suppliers for bargains.
I gave up primarily looking at name brands only because I was paying for more than the oil. All those oil ads in industry magazines, race car sponsorships, etc. With the API classifications and the requirements, there is really not much difference is quality from no name brands and name brands of oils. After all, the majority of the Group II and Group III base oil in North America is made by ONE refiner.... Motiva. The majority of add packs are made my ONE producer.... Infineum. Almost every jug of oil on the shelf is blended products from these companies.