bms1 if you look at it logically, mf is not being cynical just balanced. You have been told by the vendor that they have never had any contact with the EA. What did the EA do? Go out and earmark a site for sale without the vendor knowing? Go out looking for private sales that they could co-opt? I am not saying it is impossible but it is not simple either and would require effort, investment and subterfuge on the part of the EA (given that they would still have to pay for the advertising for example, it wouldn't cost the EA nothing). The vendor though has a clear incentive to lie to you about this. If they have contracted the EA to sell the property when the property sells they have to pay them. If they can get you to accuse and sue the EA for the deposit they may be hoping that the EA will back out and they get away with not paying the EA for their services. I am not saying it isn't possible but I am suggesting you perhaps trust the vendor as much as the EA and don't assume they are telling the truth and the EA is lying.