[Gusturd]

I recently decided to make some space in the man cave and sell a few items on ebay. I was surprised when one of my items sold (to a buyer in Washington state) and 10% state tax was automatically added to the invoice. It was hard coded and could not be removed. I'm used to paying sales tax, but not sure what to do with it when it's being paid to me. What am I supposed to do with the ten bucks? Does it even come to me or straight to the Govt? The odds of me selling any more items in the state of Washington are pretty slim as I'm only selling about a dozen items. Can anyone clear this up for me?