eBay Fees on Buyer-Paid Sales Tax

[swarmee]

Originally Posted by Santo10Fan

On a recent ebay sale, I paid a fee of $23.22 that was solely calculated from the $188 sales tax my buyer paid to his home state. I will concede eBay justifying the standard processing fee of 2.9% ($5.45) on the funds transaction.

So should we view the remaining $17.77 as a convenience fee for handling the taxes, or a cash grab? I just don't see how tax remittance could be discrete from overall operating costs, but what do I know.

If this is accurate, that's the kind of stuff that would make for a lucrative class action lawsuit, right?