If you need all 4 frags, spinning for 450 might not be that bad. You get a tendo for 3-3.5k coupons. If you need 1 frag its worth trying, if you dont get him till 200 stars, well sht happens just go for refines. You get refines for about 15cp/1, which isnt bad. Also additional random Ay frags, seal and summon scrolls.