average cost to replace an oil pan gasket? Or what else could the leak be coming from?
The best way for you to get an idea on price is to make a few calls and ask for an estimate to replace the oil pan gasket. Anyplace should be able to do this.
If you’re not convinced about the source, have another shop take a look. There are other places that the oil can be coming from such as crank seal, freeze plugs… But there’s no way for anyone who can’t actually get the car up on a lift to give you any kind of informed opinion.