Konoha Great Tree

Cave Key - 20 - (20, 13 from shop)

Charm Materials Pack - 167 - (127)

Silk Clothing - 133 - (144)

Tobirama Edo - 267 - (296)

Yagura Edo - 167 - (167)***NEW

Hinata Dreamworld - 67 - (60)

Summon Rebate

Since this is meant for F2P people, it is basically based off the tree level after all the "free" water. Many events can give more points based on RNG. But, unless you are spending a ton of coupons you won't get to level 4 or higher tree. I don't know that anyone has done an *ysis of points per water on each tree level. If I had that data, then I could give price at different tree levels. But, from what I can see even though each tree level has 1 more coin for coin spin, there is an extra non-coin prize often as well. So, to me it looks like at each level you would get between 2.5-3.5 points on average per water at each level. This assumes each prize has equal chance, which is not likely as ninja are likely lower chance one you get to higher tree levels. I am also assuming 20 coupons/water rather than 19 coupons/water for but 10 at a time. Much like Sakura's foodsack event, your price could be different based on RNG.

If you are spending 4k+ coupons/ingots on an event, then try Otsutsuki's guide instead. It can be more useful for big spenders.

Can't use coupons on time limited shop, its ingots only. I suppose if people wanted the info I could post the average coupon price for any items that have ever been in a coupon event, but I know 4tails Naruto and guy's turtle haven't been in coupon events that I have seen. I also don't often list the items in limited shop, since you don't have to convert their price in event coins/points to coupons.