So if I read this correctly, you seek to be given authority to enact a tax upon the buyer to offset a tax placed upon you by ebay for following taxes enacted by other authorities? Short answer: No.
As a seller of merchandise, you have to factor your direct costs into the sales price of your merchandise. Taxes are known, but variable. You can't directly counter them individually. You have to build it in, as others have suggested, to your overall merchandise as a cost of doing business.
I am on east coast & suffer the same in reverse to west coast for costs. You are lucky you have not enacted something on your own as there are some laws you could get into issue with by trying to conditionalize parts of interstate commerce within the US. Far easier to just adjust pricing up to average it out & deal with it like all other businesses already do.
