Here you just need an alt to get 12 regular dyes out of adv play to pay for itself.
16 regular dyes in a month pay for the premium service for that given month as well.
yes but a character card is 7.9k nx
nx is ~3m/10k give or take, and dyes are.. lets just assume 180k each
your chances of getting a dye amp itself is about 1/20 per character per day
lets say you make 10 characters.. on average that means you'll get ~15 dyes per month if you collect all your adv play everyday.. that means around 2.7m
that almost pays for premium, but not really
if you have 10 charas, that usually means you had to buy 7 cards ... 7x7.9k ~55k nx
to make that 55k nx back you will have to sell all the regular dyes from adv play for about 5 months
i forgot to account for the 3 free characters you get at the beginning, but for a character to strictly pay for itself from adv play, it's going to take ~6 months to do so just from regular dyes
if you include metal dyes + what you get off selling that, it'll be faster, but it's still going to take about 4 months to get the nx back
to get it back 10 fold that's still a few years
of course that's assuming that gold/nx rates are constant