My latest oil transaction was actually a sell. I had two 5qt containers of Pennz Plat 5W/30 purchased from WM online for $13/jug. Sold it for that. Decided that I am no longer able to physically do oil changes. We have a good local dealership. They do a nice job, it's affordable, and they vacuum and wash the vehicle.
If oil prices start to skyrocket I will go back to catching sales and doing it myself.