My wife has asked for a divorce by mutual understanding, after a span of about 12 years.During our marriage, we had purchased a flat in Mumbai by contributing equal amounts (Agreement value of the said flat being about 4.5 lacs.)My wife, at the time of seeking divorce mutually,has demanded half of the flat value from me. At what value should the settlement be made-cost price(as per the agreement),current market price, or the current value as per the Ready Reckoner?I do not have any other property anywhere.She is a medical professional and has a very good earning as compared to me.