Concerning the Case below:

Stern Oil Co v Brown Supreme Court of South Dakota

908 N.W.2d. 144 (2018)

Should it make a difference at all whether a buyer or a seller is a merchant or not?

Should a merchant be held to a higher standard?

If the seller above was a neighbor from whom our home baker were buying supplies from and who subsequently breached, should the neighbor be liable for lost profits?

pls provide references for further references.

questions are based on the case above