The price would probably be less actually because I'll be honest and say I would like to make a little bit of money on the deal (not much). But, I would charge less for shipping. If you are in the US then you'd save about $50 in shipping cost with me. That's where it becomes a good deal to buy from me instead of directly.
but also there would be a volume discount (the purpose of a group buy) so perhaps you could charge more than the volume discount price but less or equal to the single unit price? That's the point of a group buy IMO, otherwise it's just a 'sale'.
I think you will find that unless you buy considerably more than a small group buy, you wont be getting any discount.. Hint - try 50-100pcs
KVANT Australian projector sales
https://www.facebook.com/kvantaus/
Lasershowparts- Laser Parts at great prices
https://www.facebook.com/lasershowparts/
They have always given me a price break at 10.