Looks decent. Its hard to calculate the value since if i calculate i wouldnt give any value to seals and summon scrolls, considering the value they give to power. Summon scrolls give some runes which can be considered as powering up.

Purely based on market price:

Seal scrolls : 125 *4 =600 coupons

Summons scrolls approx (60 coupons)= 60* 16=960 coupons...that would be a total of 1560 coupons almost equal to what you paid for, if you are buying them directly from shop

Considering the best prices of things.

30 medium refines = 30* 20=600 coupons( i am taking the price of medium refines based on the pack of 10 you can buy from shop this week)

6 charms = 6 * 80=480(80 coupons is the price from a deluxe charms pack. Charms are available at a even lower price from a sage key event which comes rarely and then there is the wheel at myoboku trial which is RNG).

20 myboku = 20* 7 =140 coupons( 7 in the sense 30% discount in treasure of the sage gives that price)

that would be a total of 1220 coupons if you had put in best case scenarios to get those power ups directly. Considering you got all those summoning and seals scrolls along with those powering up materials and we have charms and refines rebate this week, which would give you corresponding rewards, it looks fairly good till now.