Mate the only feeble brain is yours if you are unable to comprehend my points made above. It does NOT take 4 months to laser cut and weld a few flanges and pipes, this group buy is FAR from a mass-production (there's probably about 15 of you at the most right?), and I understand it is out of BY BY's control and therefore it is the fault of the exhaust producer, and yes I could organise a group buy like this in a matter of 1-2 weeks.
Look, what BY BY is doing for us is fantastic, it is about time someone organised to have these parts produced locally for all us Skyline drivers so we don't have to order over-priced Jap brands. It really is a great deal for $700, if you are patient. As you can see, I'm clearly not.