The best way is try and go after the end user yourself, you email all the type of companies I listed before.
If you find a buyer then use Sedo for your escrow.
If you want to use a broker then most would probably be happy take that name on.
Toby Clements would probably try and sell it for you.
He handles a lot of sales and recently sold BJ.com for $325k
Good luck
---------- Post added at 04:31 PM ---------- Previous post was at 04:22 PM ----------
I wouldn't say since he has received 1 offer that's good indicator and estimate of the current value.
He needs to get the word out to the right end users and see then what is offered and I bet that value goes up.