There are also some special limited editions. As far as I know, a black man spent two years collecting more than 500 pairs of AF 1, and Nike made a pair of crocodile AF 1 specially for him.
450 is enough to buy a pair of discounted AF 1. Your friend's couple don't have to do this.
A pair of AF 1 (the one on the left hand side of the door) of NIKE360 in Shenyang in spring was discounted to 190. I bought a pair at the Nike Shoe Store across the street.
It's luck that this kind of thing is discounted. No one can go shopping all day. Of course, there are not many models of 190 left, and they have all been bought by insiders, but there are many models of 390,490, and there will be discounts immediately after the Chinese New Year, and so on.
As for the pair of pure white AF 1, they are very popular and will not be discounted even if they are available. There is also pure white AF 1, which is 690, with a high ceiling of 790.