Well, i got from 1st roll seal scroll - dont know what can be better)

Its replace.

1) Battle Armor - it was obviosly that sometimes we'll have that event, so provident players didnt upgrade their armor. Its true that d2p player can unpgrade armor just to 3 lvl, but enen in this case he'll have 3 free summon scrolls. Its really not bad.
3) Goldfish event - ye, its not best event in the game. But it is still free stuff just for stamina. Again - pleasant bonus.
5) Monthly card - dont think that even * f2p player cant spend 6$ in month for his favorite game, if he'll have that insane incoming. Really, my lunch in KFC costs more.
6) Matsuri is just permament event like Sage Battlefield, so its strange to discuss it in this thread.

and... 4) Dice Event.
This event is insane like Monthly cards. As each provident player i have some coupons in the cash. So i bought 21 dices for 420 coupons. Not so much, but what i get for this price: 22 2 lvl magatmas, 2 Seal Scrolls, 3 Summoning scrolls, 2 4 lvl magatmas, 5 mood scrolls, 3 advanced lvl runes and some other staff. Now lets calculate: 22*12+2*125+3*65+2*108+5*15+3*38 ~1150 coupons. So 400 -> 1150. Can you feel it?

Why peoples always see only dearest staff? Except Orochi we can buy stamina potions(useful), mood scrolls(very useful) and magatmas(very-very useful). Just calculate how much dices you need to buy this and roll.

Progress doesnt reset.

20 points per frag = 20 * 80 = 5 * 4 * 80 = 20 * 4 * 80 = 3600 coupons. Sometimes you'll get 10 points for roll + 14 free rolls - so he costs around 3400 coupons/ingots.