It's probably a clause to protect the seller so the buyer can't try to return it (or refuse to pay) on the grounds that "I planned on buying this as an investme

It's probably a clause to protect the seller so the buyer can't try to return it (or refuse to pay) on the grounds that "I planned on buying this as an investment, but found out nobody in the industry will buy the parts and you didn't tell me about this first". edit: or cuts their finger off trying to play around with it.