Smart Site where members can predict any event, always YES or NO to win points.

Looking for a qualify site builder that can create a smart site where members can predict any event, always an outcome of YES or NO, like a poll, but it will work as follows: First of all, this site won't be for USA, mainly Mexico and Chile. You can create it in English, then use a multilingual tool to translate it. Objective: A site where members can exchange predictions on any event, a prediction market site, with always an outcome of YES or NO, For example: Barack Obama to be re-elected President in 2012?. There are two possible outcomes to each of these events - Barack Obama will either be re-elected President in 2012 or he won't, "YES" or "NO" Users must sign up for monthly membership via paypal, charge automatically every month. Members will be working with points within the site, points packages can be bought in paypal with real money. Site will post the upcoming events for predictions. Members will be able to enter in those predictions with purchased points. For example: Event: Barack Obama to be re-elected President in 2012? Member 1: YES put 10 points Member 2: NO put 10 points Result: YES, member 1 gets 10 points. Points can be redeem or exchange for money sending those points back to us, and we pay via paypal. System need to charge a fee to buy/sell points to cover paypal expenses. Profits will come from membership and buy/sell points fee. Members are buying/selling - from other members, so always must be a match in order to close a one-one prediction on any specific event. Reference: There's a site similar to this called [login to view URL], you can take a look at it just as a reference, but it will be different. Need to know who is able to finish this project and for how much. Thank you and we'll be waiting for your bids.