880 crystals for a package that contains 8 crystal shards seems high. That's about $20 per package. So to fill out my lvl 80s last gear slots costs about $140 to get 50+ shards (or $700 for a full team). That's a bit silly. Myself and a lot of players would have probably paid you $5 - $10 per hero.
 "Heroes Tactics"){kind=icon}
it will be fixed in a very short time, sorry about this