To win a good deal, you had to involve a third party who asked to add a percentage on the price to be added to his commission, will you accept that?

Minor variations can be considered. Big demands should be discouraged as he already enjoying rewards for his work--it is our duty to protect the goodwill of the business--the chances of such practices to be disclosed is very high.

I will definitely have some buffer in my pricing and if the deal is good, then i will offer him the commission. 

If it is the requirement of good deal then why not to add an agent for it.

YES.............   MIDDLE AGENT IS THE NEED OF THE HOUR DUE TO MANY REASONS................

Should be sure that is still remaining a good deal !

, then I will accept the asked third party's comission.

Why not? Its always better to have little than nothing at all! 

sure

Yes….

Mediator , Very essential & valuable person …

Yes , I would accept it. If the prospect client is good then its worth giving extra to the third party.

Sir, i would talk to the management or my seniors to do it the other way : May be that might be OK for the product / brand in there brand equity through out . To, share the profit of the company & give the person commission in excess from our selling price . The, price in the market if changes-it might give a negative impact on other customers -we could treat this as a special case & give him / her a special commission but should not alter the entire pricing structures because of one customer .

I agree with padmakumar pathiyil