I haven't seen anyone mention but have you looked on OfferUp or Facebook marketplace or craigslist? I add 2 stroke oil to my diesel cars and constantly pick up "cheap", new old stock or bunch of random cans of oil from people. My last haul was 3.5 gallons of different quarts of oils for $20. It included bunch of Napa bottles, some quicksilver and bunch of general brand oil that I wouldn't run in my 2 stroke equipment but perfectly fine for my diesel. I'm keeping quicksilver for my stihl stuff once I run out of stihl oil.