I am buying a new build from a developer. I just realised from paid price registry that my neighbour who bought exactly the same build as me (same square feet, same interior) just a couple of months earlier was paying nearly 15k lower than me. With current brexit situation, I don’t find the price I am paying is fair. We are probably a few days away from exchange, I would like to re-negotiate the purchase price with the developer, how do I go about? (I am a no chain buyer)