I use Lee Lube, and order it by the box of 12 tubes. Shipping per tube is not much.
Are you using a Dillon? If so, this technique is handy for larger quatities. If you are sizing a few cases, the case lube technique does not matter very much. If you have a bucket or two of brass to size, there is a fast efficient way to lube the cases. I lube 100 or so cases (rifle) at a time. Takes about 30 seconds.
I use Lee case lube. It is a water soluble cream that is easy to clean off.
Dump brass in a plastic pail that has a lid.
Then take a 1" worm of lube and smear it around the top inside wall of the pail.
Put lid on and swirl and shake for 15 seconds. This will lube all the cases and deposit a tiny dab on the case mouth, to lube the expander button.