At the start of the Covid outbreak I couldn't obtain 3m dust masks from any of my usual suppliers so bought a £225 airflow mask from eBay. I got the last one they had in stock, other retailers were selling the same item for anything up to £500. Item was marked as dispatched, Guess what, it never arrived, sold to someone who was prepared to pay a higher price I suspect.
After numerous messages to the seller with no response I contacted eBay and was refunded immediately.
It's the first time I've had any issues with eBay and have always found delivery on or before the dates stated, even during this pandemic.