Real Estate / Budimex Murano development (central Warsaw) Phase I [38]

I am also interested in renegotiating my contract with Budimex but am afraid that they will not agree on lowering the price....talked to them last week and they said that renegotiating the price is totally out of the question. I am now seriously considering withdrawing from the contract....which means loosing 10%. Does anyone know if there is a possibility of them returning at least part of the 10% deposit?