1. There is no appeal. Judgment is final.
2. Each party chooses one arbitrator and the third is chosen by the two arbitrators chosen by the parties.
3. Unlike the court system where the courthouse, and the judge and his/her staff is supported by taxpayers the entire arbitration (building, wages of arbitrators and support staff, everything) is paid for by the parties. With that said the entire arbitration process usually cost less than adjudication. This is due to #1; no appeals.
4. The cost for the three arbitrators can cost $10,000/day. Arbitrators charge more than attorneys. (So, 10,000 divided by 3 = $3,333 per arbitrator per day. But they do not work every day.) Civil Procedure by Yeazell 7th ed. pg 505-06