Have you priced out AMSOIL Signature Series with a gallon case of 4? It's much cheaper than that. Around $10/quart and a little change or so from what I can remember.
Frankly I'd stick with AMSOIL. I think their history and testing is unmatched. If you don't think so, watch the Banks Power video series from his visit to the AMSOIL headquarters. (If you want to stay boutique. Good argument for all the high quality oils OTS at Walmart.) Rudnick isn't at HPL any more. I don't know if they'll lose touch with time without him as the formulas drift and change, but I trust AMSOIL to make a quality product forever.