No. not the same thing. BB is a solvent. EO can be used like oil. Either replacing some of the oil or instead of oil. I like it because it is thinner than oil and flows thru a smaller pin easier.

Where do you get your EO, and how much is cost of EO compared to regular oil.

EO is much more expensive than oil. It generally acts as the primary solvent when used (instead of oil).

You can find it many major research supply companies. Maybe lemelange too, not sure.