First of all, I would like to say, credits are to our lovely community team for providing these prices.

"This is Youth" Outfit:

Total redeemable: 50, 1,400 pts (280-467 Keys) [2,800-4,670 Coupons/Ingots] {56-100 Coupons/Ingots = 1 frag}

Note: Taken from Discord, "Community-Information" section.

So there is a chance to get it for 3k coupons, but the maximum amount of coupons/ingots to redeem seems to be around 4670 coupons/ingots.

~Jib