This is a member to member public Board and your seller is unlikely to see it. Nor do eBay employees come here often.
That being said, most sellers ship very promptly when a payment clears. After that, in my 30-odd years in mail order, delivery takes about 20 days within North America and 30 days from Asia. Often sooner, rarely later.
In addition, you are covered by both eBay and Paypal Buyer Protection against non-delivery and items that are Not As Described.