Honestly, the only bruiser item I could see being cheaper is Sterak's Gage due to how it scales with the game. It's basically the bruiser version of a Zeal item.
Sterak's Gage
Jaurim's Fist (1200) + Pickaxe (875) + 625 = 2700
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 (57 + 1 per Level)% 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.
Black Cleaver, Maw of Malmortius, Titanic Hydra, Frozen Mallet, and Trinity Force (if we're counting that as a bruiser item) are all fairly priced for what they do.
It's just marksmen itemization being a bit too cheap rather than bruiser stuff costing too much (Zeal upgrades are deceptively strong for their price point in practice, and are kept cheap on the logic that you need AD for them to be good, but build order already covers that weakness).