I went to WM today to see what oil was on clearance. Didn't see any of the deals that others have reported, but did see Pure Guard Synthetic Blend 2 Cycle oil for $0.25 each. I took all six they had. They are 6.4 ounce bottles to make 2 or 2.5 gallons.
Also found Stabil 360 for $3.50 for 8 ounces.
All were found in the "seasonal" section off the garden center.
Stihl bottle for size comparison.