Knight's Vow Super Strong

I get that support champs don't get a lot of gold income so some support items are cheaper than others, but these items aren't limited to just supports.

I had a super long, close to an hour game last night where teamfights would have both sides just wipe each other out then nothing could be pushed. Gold capped and more than 3k banked I decided to look for more armor and HP on Hecarim and swapped this item in and partnered it on Brand

For 2400g I got 60 armor, 400 HP, 15% movement speed (= more damage on Hec), doubled base HP regen and the unique with my ally. The stats and passive would be equal to something like randuins, deadmans plate or sunfire which are all valued at 2900g.

During the long teamfights, KV transfered 1,600 damage from Brand to myself which was enough to keep him alive through a Vi and Wukong ulting on him, and healed me for 2,900 HP from his aoe damage spam on enemy champs

IMO gold cost should be increased by at least ~200g. The passive on this thing is huge to keep carries alive and give a tank more sustain