We usually repair a few units a month that are received damaged by the second, third, or fourth owner. We don't gouge with our repair bills, the cost is often less than 10 dollars for our small products with the price increasing based on the size, complexity of the product, and type of damage. We've had units that have been struck by lightning, a cat urinated into an Asgard, we had one guy whose workspace was so filthy that when we opened his Mjolnir we found filth and dead cockroaches- those guys get charged. We get units that are dinged, scratched, and dented. We've had customers decide to take their products apart and then put them together wrong. All these folks have one thing in common, when we finished they weren't given an inflated repair bill.
We do our best to treat people honorably and with respect. At the same time, if we repaired every second, third, or fourth hand product out there our costs would go up and we would be forced to charge more to all customers to cover this cost. Most of our customers hold on their products are are very happy with them. There is no reason they should be asked to subsidize people who choose to resell their products.