Originally Posted by kane

My advice, for what it is worth:

As others have said, look into the company and see what kind of revenue they have. If it is a huge company, paying you a decent amount might not be that big of a deal. If they are a smaller company, it will be a bigger deal.

I would ask them for an offer. Just say to them something like, "I hadn't really thought much about selling the domain, but I would be open to considering it. What would you consider a fair price?" You can tell a lot by this offer. If they say $150 and you come back with $100K they might just walk away and buy a different, similar domain. If they say $10K and you say $25K you could be in situation where you could come to a good deal.

If the domain is really similar to a product they have trademarked you also don't want to go so high that they might just say fuck it and try to take the domain. You could fight it, but then you are spending money instead of making it.

Don't let greed stand in the way of making a good deal. If you really don't care whether you sell the domain or not then you might as well swing for the fences, but if you are serious about selling it, be realistic and be reasonable.