Tier Breakdown
Tier 1
600x Covenant Coins $10.20 
25x Costume Key $7.50 Tier price $12.00 Value gap +$5.70 True Value $17.70
Plus value tier. Price per pull is above $1.
Tier 2
700x Gems $3.50 10x Costume Key $3.00 Tier price $7.00 Value gap -$0.50 True Value $6.50
Fair value overall. Price per pull is above $1.
Tier 3
600x Covenant Coins $10.20 
4x Epic Tome of Experience $20.00 Tier price $15.00 Value gap +$15.20 True Value $30.20
Great value tier. Price per pull is above $1.
Tier 4
30x Aether Crystals $5.10 Tier price $3.00 Value gap +$2.10 True Value $5.10
Plus value tier. Most of the priced value here is coming from aethers, so this mainly stands or falls on how much you want those upgrades.
Tier Breakdown
Tier 1
600x Covenant Coins $10.20 30x Costume Key $9.00 Tier price $12.00 Value gap +$7.20 True Value $19.20
Plus value tier. Price per pull is right at $1.
Tier 2
800x Gems $4.00 10x Costume Key $3.00 Tier price $7.00 Value gap +$0.00 True Value $7.00
Fair value tier. Price per pull is above $1.
Tier 3
700x Covenant Coins $11.90 4x Epic Tome of Experience $20.00 Tier price $15.00 Value gap +$16.90 True Value $31.90
Great value tier. Price per pull is above $1.
Tier 4
33x Aether Crystals $5.61 Tier price $3.00 Value gap +$2.61 True Value $5.61
Plus value tier. Most of the priced value here is coming from aethers, so this mainly stands or falls on how much you want those upgrades.
Community Discussion
Coming soon: player comments and strategy notes.