Now and then, I do something dumb.  Most recently, this resulted in a hole in the oil pan of my ZF HP 4-22 automatic transmission as used on the E30 325.

If you need an oil pan, I sell these for $15 each.  At that price, I expect they will work fine but they won’t win beauty contest, i.e., they will have scratches and maybe minor dents.

This will be without the drain plug or magnets.  The plug is $5 for a not-stripped yet not-pristine version. The magnets are $3 each, and there are two.