The two number domain name,66.de ,was recently sold through Sedo for $12,780 .
Here are other domain names sold recently at Sedo you may find interesting.
ad4sure.com 2,350 USD
famousacaiberry.com 1,000 EUR
cheaperway.com 688 USD
domainnamemanagement.ne 516 USD
taxes.co.uk 5,000 USD
immovalais.ch 999 EUR
victoria-gotha.de 1,000 EUR
giftideas.org 2,500 USD
tbsx.com 400 USD
For more details check out www.sedo.com