Best site/tool for domain value estimation

[funa]

What tool or site do you use or propose to use for domain value estimation? How reliable can this be comparing to the actual price this domain can reach on the market? Any experience in this regard?

[owntype]

Don't trust auto-reappraisal tool, but if you do need one, you can try www.estibot.com
and compare your domain with domain sales records at Namebio.com