Shouldn't Sterak's Gage be balanced/priced like the Zeal upgrades?

It's an item that's not stellar on its own statistically, but has a strong passive effect and scales with other built items and game duration (in Gage's case, Spellblade effects and bonus HP).

It fills a similar slot for bruisers that Zeal items do on ADCs, but costs a good deal more gold. Why not condense it, something like this:

Sterak's Gage

Jaurim's Fist (1200) + Pickaxe (875) + 725 = 2800 Melee Only

+400 Health

Unique: +50% Base Attack Damage

Unique - Lifeline: If you take 400 - 1800 (based on level) damage within 5 seconds, you gain a shield for 8 seconds equal to 75% bonus Health that decays after 0.75 seconds (60 second cooldown).

Unique - Sterak's Fury: When a Lifeline effect is triggered, gain increased size and +30% Tenacity for 8 seconds.

Do whatever with the numbers, I just threw it together.