Guys its simple, the likes of Civic Type R Owners Forum organize group buys on a regular basis of things like uprated anti roll bars, induction kits, manifolds, cat-backs etc. The way they work is someone contacts the company and agrees a fixed discounted price for 10+ orders of an item then a slightly cheaper rate for 15 and a slightlty cheaper price for 20+ orders. Then you just need to make a thread to generate interest with the details and get people to add their name, then original post gets a list of user names added to the bottom that gets updated everytime someone adds to the thread. Once you have the required number with at least a few extra people interested you get the users to phone the company to say they are part of the group buy and place their orders and they will get the item at the discounted price :)