I purchased a Therm-a-Rest NeoAir Camper Mattress which had a manufacturing fault so I returned it to All Outdoor. They offered refund or to wait until the next batch came in, which could have been 3 months. I chose to wait.
A couple of weeks later I received a replacement matress from them only to discover that it was the same one that I returned with the exact same fault.
I again returned the product and opted for a refund.
The customer service was prompt though fairly unapologetic given such a mistake, but the reason for writing this comment is that their internal admin must be very poor if returned faulty goods are being returned to stock and sent out to customers.
When I purchase something I expect a new item, not one that somebody else has rejected, doubly so when the item is an expensive one.
Watch out - your expensive purchase may be somebody else's reject.