Here is the first response I got... It's from autolumanation.com which is popular with the grand prix forum.. They have great pricing
We can offer a 10% discount coupon to the group members, if the orders are shipped to individual addresses.
If the orders can be combined into one big order and shipped to one address, we can offer a 27.5% discount for all orders of $500+ ▶ Show quoted text --Thank You,