455818 Groupon website modification work 2

Good day to all. We already have a groupon script > check the demo link [login to view URL] We would like to do the following modification : 1> Design integration - we already have the design in html format. 2> Include mailing list in user registration form. 3> Modification on referral system credit. 4> Paypal authorization and void implementation. 5> Other minor changes We already planning to get the script from the above link but if you have your own script do let us know and we will buy if from you. All the work will be done direct from our server and we accept payment upon completion only and we don't pay any deposit or escrow. The max we can pay for the modification work is USD 150 only. Only programmer who agree for the above , PMB or bid our project. regards Mike Mahendra