not sure how much total they've gotten from me. always been a dollar at a time. in addition to the 100 gem pulls, sometimes if i wipe to a boss i'll say "fuck it" and spend a dollar to heal.
btw, the party i'm rocking right now:
Cloud, lv. 54, Buster Sword, Crystal Helm (4*), Power Wrist -- rank 3 Fira Strike, rank 2 Blizzara Strike
Sephiroth, lv. 54, One-Winged Angel, Red Jacket + (5*), Power Belt -- rank 2 Double Cut, rank 4 Power Break
Squall, lv. 54, Zantetsuken, Genji Helm, Hyper Wrist -- rank 2 Double Cut, rank 2 Water Strike
Tyro, lv. 54, Healing Grimoire, Genji Shield, Hero's Ring -- rank 3 Curaga, rank 2 Thundaga
Vivi, lv. 53, Empyrean Rod (4*), Royal Crown (4*), Barrier Ring -- rank 2 Firaga, rank 2 Quake
really wish i had a 5* rod for Vivi.
i keep my abilities set up like this mostly because i'm generally too lazy to swap out abilities for boss fights, and that covers just about every potential weakness for bosses.
for really tough fights i swap in Terra instead of Vivi. Terra essentially is like a second Tyro the way i set her up -- she can equip my second Zantetsuken, she can wear heavy armor, and she can use 3* White Magic in addition to 5* Black Magic. I give her my second rank 3 Curaga and whatever second ability works for the fight i'm about to do. so she can take a beating, does decent damage when auto attacking my way to a boss, can heal, and can drop some nukes. i really wish that her memory crystal was available already.
i wish i hadn't spent all my Greater Earth Orbs before i heard about VIT99. need 'em to make Protectaga. i usually just rely on RW Sentinel's Grimoire for boss fights. seems like VIT99 is easier to set up than VIT0... and easier to keep it going for the whole fight probably.