To be precise, each of her fragments costs 36 coupons at 30% discount. 36*80 = 2880.

Just in case someone asks about GNW Tenten, 30% discount of her frag costs 31 coupons. 28 coupons for Iruka.

Most ninjas are only up to 30% discount. Exceptions are the not-so-popular ninjas that have up to 40% discount like Sage Jiraiya, KT Orochimaru, etc.

Note: These were the prices I had from last month's Treasure of the Sage event.