Ok let me help you out here.It depends on where you are. Where I live, ebay is required to collect the sales tax from the buyer. Apparently, that's the case in most tax jurisdictions.
"If you sell to buyers in the US, some jurisdictions may require you to collect applicable Internet Sales Tax on your transactions. As of July 1, 2021 a total of 46 jurisdictions require the collection of sales tax. In such cases, eBay collects and remits Internet Sales Tax on your behalf."
In most places ebay charges the sales tax.
The seller never has to pay the sales tax and ebay will never charge sales tax to the seller no matter what state you live in.
In places where sales tax is charged, the buyer will see the sales tax added to his purchase and the buyer will have no choice but to pay this when completing the transaction.
Ebay will collect the tax and remit it; nothing for the seller to do.
When you sell stuff on ebay, you pay the ebay fees; that's all. As the seller, never pay the sales tax.
Correct me if I am wrong, please.