urgent project no time wasters

hi all check what i want in my site I have a point system on my website such that on each comment, posts, users are getting points. I need after specific point - users get promotional offer to buy items through their points. Example: If I am a user, so to get promotional offer - first I have to reach 20000 points. Once I reach 20000, then automatically my point become zero and new points will start. But from this point, I am able to get access for promotional offer. Like if I again collect 1000 point, then I will get suggestions to buy specific items within that range. Just user has to choose that item and they have to give their point to buy that item. Like - One pen (1 unit )has 200 points. Then user have to deposit 200 points and they can get that pen. Once they click to buy, then they have to fill short form which contains user name, address, phone and one code number which user will get though mail after clicking to buy option. And a confirmation mail, that user will get that item within 1 week. But the most important thing, it should be based on geo-location. Means, users of United States can buy only Uniited States products. its simple for expert in word press , php and buddypress Budget $10 to $15 no time waster serious bidder.. no milestone nor escrow it would take around 3 to 4 hours ... needed to complete within night... its urgent thank you