Tier Breakdown
Tier 1
50x Challenge Coins $6.50 
1x Epic Tome of Experience $5.00 Tier price $7.00 Value gap +$4.50 True Value $11.50
Plus value tier. Price per pull is above $1.
Tier 2
—
1x Epic Tome of Experience $5.00 Tier price $15.00 Value gap -$10.00+ Value $5.00+
Lesser Tomes value is unknown - consider this if you need the Lesser Tomes.
Tier 3
1000x Monster Island Coins $15.00 $0.00
Tier price $20.00 Value gap -$5.00 True Value $15.00
Poor value overall. Price per pull is above $1. Battle items usually do not add much value, but a 100+ stack can still be useful if you need them right now.
Tier 4
20x Costume Key $6.00 30x Challenge Coins $3.90 300x Monster Island Coins $4.50 Tier price $10.00 Value gap +$4.40 True Value $14.40
Plus value tier. Price per pull is right at $1.
Tier Breakdown
Tier 1
60x Challenge Coins $7.80 1x Epic Tome of Experience $5.00 Tier price $7.00 Value gap +$5.80 True Value $12.80
Plus value tier. Price per pull is above $1.
Tier 2
—
2x Epic Tome of Experience $10.00 Tier price $15.00 Value gap -$5.00+ Value $10.00+
Lesser Tomes value is unknown - consider this if you need the Lesser Tomes.
Tier 3
1200x Monster Island Coins $18.00 $0.00
Tier price $20.00 Value gap -$2.00 True Value $18.00
Fair value overall. Price per pull is above $1.
Tier 4
25x Costume Key $7.50 30x Challenge Coins $3.90 300x Monster Island Coins $4.50 Tier price $10.00 Value gap +$5.90 True Value $15.90
Plus value tier. Price per pull is under $1.
Community Discussion
Coming soon: player comments and strategy notes.