Due to the drop amounts of zenni and the rates you level, there is basically no point in buying early game equipment or for it to even exist. It should have a much lower price point to make worth while.
Yeah early game armor feels way too pricy for the Armor Index you get out of it. Veterans with enough RPP to afford a custom item can completely ignore armor 'til later, really, so really it just hurts newer players more than anything. Level 6 armor prices could definitely be lowered across the board, maybe cost 500 zenni in total for a full set. Level 11 armor could maybe cost like 1k-2k in total. And I can't even remember if there are level 20 sets.