I doubt it's worth your time to do this, but it depends on who (and where) the customer is. I'd leave this up to the legal agreement and consider part of the (

I doubt it's worth your time to do this, but it depends on who (and where) the customer is. I'd leave this up to the legal agreement and consider part of the (high) price tag to be compensating you for the (low) likelihood of wrongdoing on their part.