Yes, eBay is required to collect and remit the sales tax on sales being delivered within states that have enacted marketplace facilitator laws. For those states that have sales/use tax laws in force but have not enacted marketplace facilitator laws, the seller, if required to collect sales tax under their state law, may have eBay add it to the buyer's bill and then the seller must remit it to their respective state. However, if the seller is not required to collect it, the buyer is responsible for paying it to their state themselves.
Of course, there are, I believe, four or five states that do not charge their residents sales/use tax.
"It is an intelligent man that is aware of his own ignorance."
