Vendors not stocking parts they advertise

My recent customer from Spain endured 11 weeks of back orders on his Mopar Performance air cleaner lid from both Summit and Jeg's. After receiving an email advising of yet another "unknown ship date" for weeks or months into the future, I bought one on Craig's List on his behalf, a better old piece than the current castings, for $80.
It's done, shipped and on his car ... unless he liked the matching Cal Customs setup better.