To play it safe you used Escrow.com to hold funds whilst a property transfer takes place. If you are dealing with a major player - real businessman/woman - you don't need an Escrow service is what my experience has been.
If you're asking "how do I find buyers" then here's the deal: You don't. They find you. Truth. Truly. Give up all other hope, unless it's a good name and you are prepared to sell it for pennies on the dollar. Then put it up at a domain forum.
For every rule there's an exception, but in domains the exceptions are like moon rocks. They're that rare. You could attempt to proactively sell a domain like Drugs.com or Loans.com to a major corporation. There's about 100 domains that fit this model. You don't own one. If you did you'd already be rich based on PPC traffic and therefore you'd know.
Listing domains on Ebay or GreatDomains isn't what makes the sale. The domain makes the sale. The domain and pricing it right.
Want info about pricing? Don't get an appraisal. 99.99% of appraisal services are incompetent. Use a good domain forum and ask for appraisals.
Good domain forum? DomainState and DNForum.
That's about 80% of what it has taken me 6 years to learn. Anything more and I'll have to charge you. ;0)
