I'm selling 404500.com for a dollar. You heard right. It's located at NameCheap (free push, NC account is free as well). It's a postal code in China, it's also an HTTP error combo (404 and 500). Would make a perfect anonymous or private label domain.
First $1.00 gets it. Post "SOLD" here and I'll PM my PayPal address. For this hot dollar I only accept PayPal. ;-)
If you need to know more (reg. date, exp. date, etc.) give the domain a WHOIS. For $1 I'm not going to type any more here.