My high value domain purchases and sales that aren’t completed in private are finalized using Escrow.com. In January, the company announced that it had completed over $1 BILLION in transactions, and I would imagine a large percentage of those transactions have been domain names.
I just watched a Mixergy interview with Escrow.com CEO Brandon Abbey, and I think you’ll enjoy it. I couldn’t embed the interview below for some reason, so I highly recommend checking it out when you have a chance (it’s fairly long).
I also recommend checking out Mixergy for a wide range of executive interviews from a wide variety of people and companies.