You say "To be honest , I don't really want to give the supplier out.
It took a long time to find him .. So ... I might use him for starting my own store
"
OK you want people to fund your business or business credibility with a supplier, fair enough--that's fine--glad to help if I can save a few dollars in doing so.
That changes everything, however, everyone is buying from you--you are the source/store/supplier for ALL intents and purposes and have to be responsible for 100% of everything. What you do or don't do with with your unnamed supplier in China is nobody elses concern or business.
This is actually PRE-SALE from your own store ---"TheJoker301's Laser Shop" --- or whatever you want to call it.
In all the Group Buys I have seen everyone knows the source where the product is coming from---not just the member. Taking money from people and delivering a product from Israel is a business---you don't have to say you may start your own store---this is it--a business/already commerce.
I guess you could call it a PRE-SALE with a group buy flavor as you are claiming you are not making anything on these sales according to the group buy sticky but it is neither here nor there. You are entitled to make or not make whatever you want. Certainly it is your intention do a PRE-SALE to gain credibility/relationship with the mystery supplier/vendor. You say "I might use him to start your own store".
see:
http://laserpointerforums.com/f55/what-group-buy-55810.html
That you want to do a Pre-Sale and may start a larger store and want to keep people in the dark as to the actually supplier or manufacturer for reasons unknow( am sure the supplier sells to many businesses) is fine well and good, However, understand people are buying from you--nobody else and you need to be responsible for delivering what you are telling people they are buying. What your supplier does or does not do is your problem between you and him ---not the problem of people ordering from you based upon your representations.
There is no need to hide a Pre-Sale all under the heading of a Group Buy from an unnamed 3rd party nobody is buying anything from. If it is a Group Buy it is a Group Buy from you/your store and you can't claim later "not responsible" for your own business if it all goes wrong with a supplier. It can't be no one is accountable or responsible---that only happen in government.
Anyway be well and thank you for the straighter answer. It answers a lot of questions --example: why the supplier can't ship directly to each person getting a unit which is preposterous when you think about. Why not ? Cost of labor in China to high--can get someone for $25 a week to fill out shipping paperwork and ship? Be real-- the supplier guy can ship to everyone if he can ship to anyone by whatever method anyone is willing to pay for. Who ever heard of an export business that can not ship or has difficulty shipping?