.....BT Smokescreen (2004)?? All of them have a number on the side of the car, what is the most uncommon number??
As far as I know, BT-01 7 and 8 Smokescreen were produced in equal numbers, as were BT-07 1 and 2 Smokescreen GT. Some of them could have become rarer than others. I highly doubt it's an indication of production numbers, but an eBay search for "binaltech smokescreen" resulted in 9 auctions. None of them have BT-07 Smokescreen GT 2.
Yup, all BT variants released at the same time (i.e. BT-01 Smokescreen, BT-07 Smokescreen GT, BT-08 Meister and BT-15 Prowl) were released in an equal ratio of 3:3 in cases of 6. Only the two versions of BT-06 Tracks shipped independently of each other (since the blue version came out later than the yellow one). If any variant became rarer than the other, it's because of higher demand, not because it was produced in lower numbers.
Yeah, I'm not a numbers guy like Nevermore bit both were easily available in my country when the toy was first released.