I read AbdulBasit Makrani’s thoughts about payment plans on NamePros, as well as the commentary added by others. I thought I would share a couple of additional pieces of advice that I think could be helpful based on my own experiences.
I have done somewhere around 10+/- deals using payment plans. For all of them except for one, I used either Escrow.com, DAN.com, or John Berryhill for the escrow / holding service. There are other companies that offer payment plan deal facilitation, but I have not used any other services. Based on my experiences, there are two things I would suggest – use a third party provider to facilitate the deal and do your best to ensure all of the fees are covered with the first payment.
Payment plans can be beneficial for several reasons. The buyer will be able to purchase a domain name that might not be affordable without a payment plan, and if they buyer fails to make payment in full, the seller keeps the payments and gets the domain name back. Aside from not getting paid in full upfront, I don’t see many drawbacks that can’t be worked out in the payment plan agreement.