Woocommerce Facebook Cart & Twitter Points

Facebook Business Page. Shopping Cart on WP site is Woocommerce. Need to have a Facebook Shopping Cart that has Group Deal. A Group Deal is when say 2 people buy I can fix 2% discount, for 3 people 4% discount or for 5 people 10% dsiocunt (number of people and discount should be flexible, i.e. site owner should be able to set it from time to time on different deals). Place for people to form common purchase groups on the cart or facebook page so that group deal can work. Next Project: Points for retweeting my site handle and pionts for using hashtag specified by us (points can be built to combine with either MyCred or with Sumo Reward points). Immediate project.