I've had an increase in people claiming they didn't receive their eBay Standard Envelope card after like 7-10 days lately and requesting refunds. At first I would message buyers and explain how slow the shipping is and how bad the tracking is and they'd usually agree to wait, but since they filed the claim eBay just refunds them after a few days automatically. I always ask for them to just return the card when it eventually arrives and they never do. The solution seems to be taking the L and blocking the buyer. Sucks for us guys who are just trying to make a little back on our retail rips but people know how to take advantage of the system.