its an easy sell in that area . Take walkies, find every active agents number in the area off the signs, contact and haggle.
also make sure YOU contol the marketing budget not them ...eg that its not all over the property pages before you know about it and you paying costs for the privilege .
make them detail the proposed sales marketing spend / signage before the deal is done to sell it and hold them to whats agreed.
and well done you , that was a good investment and it seems to me a timely exit !!!!