The problem is, most domain name sellers don't have a clue about how to get their domain name in front of large corporations. They nearly always get shot down by a gate keeper (secretary, receptionist, pa etc) who tells them, "I'm sorry, Mr. Company isn't interested. But thank you for thinking of us."
To successfully do an "end-around" and eliminate resistance from the gate keeper use a Letter-Call-Follow Up sequence, send a brief letter addressed directly to the high level executive. Explain the value of the web name/ website to the corporation and back it up with sales records, marketing research, e.g. growth of internet use among there target customers, what there competition does by the way of web sales etc etc . If you don't have all of these, use as many as you can. beacase the more info you can send to back up your name the easier it is to sell
If you can demonstrate a value to the corporation that having the domain name will bring to them they will buy the domain . executives etc are charged with keeping the company profitable and increasing the value of the company's stock to its shareholders. They are more than happy to hear about websites / names that will help them achieve these goals. Don't just send an "I have a domain name that I thought would go with your company" type letter show them the potentail sales there losing they will see the £££ the sales a doddle
There are lots of people who registered names as the outlay is so small think they are worth a fortune but they are not unless you can sell them....