For now there is no single Bitcoin transaction market that every transaction is free, at least there is a shipping gas cut, depending on the market rules itself in deduction,
so for those of you who want to transact Bitcoin you can choose a cheaper market in the transaction is up to you, many can be handled, I don't mention the market, you can search on Google. Or service forum: https://bitcointalk.org/index.php?board=52.0