Of course not, if he answers then he will have to either forgoe sticking an extra $10 on there in handling, or will lose your bid.
I once bought a PAPERback RPG book from a lady on ebay who didn't have the shipping listed, but wanted $12 after the sale. It turns out that is what it cost her to drop it off at mailboxes etc and have them package it and UPS it to me.
I was like. Its a book, it can ship for $1 at the post office.
She said she didn't use the post office for shipping.
This went back and forth for a while, and finally she gave in and sent it media mail for like $2 or something, but only after I pointed out that I could simply BUY the book at my local bookstore for much less than her combined price, and it made no sense to use a shipping method that cost 10 times as much and would result in my never receiving the product. (If you are single and employed you pretty much can't receive anything from UPS that requires a signature).