Hey there,

It depends about the events, if you have RNG in them or not, etc... but here are their prices on average :

- Minato Jonin Avg: 150 coupons/frag --> 12 000 coupons for 80 frags

- Kakuzu Avg : 186 coupons/frag --> 14 880 coupons for 80 frags

- Konan Avg : 236 coupons/frag --> 18 880 coupons for 80 frags

- Shisui Avg : 162 coupons/frag --> 12 960 coupons for 80 frags

- Naruto 6p Avg : 240 coupons/frag --> 19 200 coupons for 80 frags

If you want more info, about other ninjas or events, you can look at Naruto Online community Discord, or someone called Picklejuicy on the forum, each week they review events prices