Basically someone in a position of power, can not hold that
position of power/trust to an advantage or a actual disadvantage.
Or take leave of their duty..yardayarda
The question is timing.
When did the fee become payable?
...Whoow I get that under normal circumstances if you'd have been 'told'
and understood the terms...You'd be paying.. but under some terms.
What were they...has the PP cost now gone up?
Was it before you 'put in your offer' and did the selling agent know about it
and perhaps 'accidentally' forgot to tell the buyer?