Selling Interting domain making $300- $500 with adsense every month 2 words

Actually...make that an interesting domain earning $300 to $500 with adsense for domains every month...no idea what the 2 words in the title is...

I've got a domain that I parked with adsense 6 months ago. It's been consistently earning $255 to $500 every month. I have no idea where the traffic comes from. I don't actually care. In June it earned over $500 and I've got no reason to think that is going to stop. The fact is, I probably shouldn't sell it since the revenue just seems to be going upward with it, but I'm curious what kind of offers I'll get for it. It's a two word domain xxxxxxxxx.com and I bought it back in 2004 and ran a couple of fairly unsuccessful blogs on it and then finally thinking I should sell it for $5, I decided to see what would happen when I parked it.

So, if you are seriously interested, shoot me your best offer via pm and we can figure out the details. If you don't have any i-trader or a bunch of negatives, I probably won't deal with you and if you send me a ridiculously low offer like $xxx or low $xxxx, you probably shouldn't expect to hear from me either.

The only proof of anything I have is my adsense stats and earnings,but that should be good enough. I'll gladly share information through June with serious buyers.

Thanks,
Vago