Here is the rough cost in coupons to get the event points to buy one of the items and the average cost for that same item over the last year and 8 months

This week: Konoha's Great Tree, Colored Banner Gift, Summer Memories, Fishing Mania, Refining Rebate

Item - cost - (average cost in recent events)

Poor Deals in Red

Good Deals in Blue

*** - Lowest Coupon Price I've Seen

Best Deals - Unbound Runes Pack (Fishing) - 68% of Average

Sports Clothing (Banner) - 75% of Average

Hiruzen Edo (Summer) - 78% of Average

Worst Deals - Advanced Refine Rune (Tree) - 162% of Average

Medium Refine Rune (Tree) - 154% of Average

Training Potion (Tree) - 138% of Average

Command Flag Frag (Tree) - 119% of Average

Cultivation Pill (Tree) - 122% of Average

Guren (Fishing) - 116% of Average