Well, he must be a really forgiving guy. When V6P.net and 6GA.com had the group buy for Sedan and Coupe rear window spoilers, 75% of the people backed out/Flaked when it came time to pay up.
It took a year or so for it to come together from talking with AIT Racing to the completed end product. AIT came thru though, and the product was top notch. I bought 2 myself.
So, personally I wouldn't set up any group buy for AIT unless it was stated that a Non-Refundable deposit would be required to filter out the flakers.
** There are actually still about 3 or 4 Coupe AIT spoilers floating around on Ebay.