Hey guys!

I know this is a very old feature, but I thought it would still be quite useful to know such numbers

First off the cost numbers are purely based on being fully unlucky with the level up and on the full prices of threads

Consider that by being lucky with level ups + getting free threads from random events can make the prices halved (you can especially get medium threads for free thru various events)

The normal shop full prices:

Common Thread = 13 coupons/ingots

Medium Thread = 38 coupons/ingots

Advanced Thread = 63 coupons/ingots

Upgrade to: (battle armor rebate bonus)

Rank 1 = 1 common thread (-13 coupons/ingots)

Rank 2 = 4 common thread (-52 coupons/ingots)

Rank 3 = 12 medium thread (-456 couons/ingots)

Rank 4 = 36 medium thread (-1368 coupons/ingots)

Rank 5 = 90 medium thread (-3402 coupons/ingots)

Rank 6 = 135 advanced thread (-8505 coupons/ingots)

Rank 7 = 250 advanced thread (-15750 coupons/ingots)

Rank 8 = 600 advanced thread (-37800 coupons/ingots)

Full value of the rebate bonus: 67346 coupons/ingots

Upgrade requirements:

Common Threads = 1 thread for 1 growth point

Medium Threads = 5 threads for 1 growth point

Advanced Threads = 8 threads for 1 growth point

Lvl 1>2 = 50 growth (50 common threads)

Lvl 2>3 = 100 growth (100 common threads)

Lvl 3>4 = 50 growth (250 medium threads)

Lvl 4>5 = 100 growth (500 medium threads)

Lvl 5>6 = 200 growth (1000 medium threads)

Lvl 6>7 = 100 growth (800 advanced threads)

Lvl 7>8 = 200 growth (1600 advanced threads)

Lvl 8>9 = 300 growth (2400 advanced threads)

Total value = 150 common threads, 1750 medium threads, 4800 advanced threads

Lvl 1>2 = 650 coupons/ingots

Lvl 2>3 = 1300 coupons/ingots

Lvl 3>4 = 9500 coupons/ingots

Lvl 4>5 = 19000 coupons/ingots

Lvl 5>6 = 38000 coupons/ingots

Lvl 6>7 = 50400 coupons/ingots

Lvl 7>8 = 100800 coupons/ingots

Lvl 8>9 = 151200 coupons/ingots

Total value = 370850 coupons/ingots

Total value - rebate = 303504 coupons/ingots