Originally Posted by Ashtagon
Technically, not quite the same. Bracers don't occupy the "body" slot, so cost twice as much for their armour enhancement bonus. A linen shirt +2 would occupy the body slot for magical equipment purposes, and so the magical enhancement costs the same as if it were a chain shirt +2.
Bracers of armor +2 cost 4,000 gp (per the SRD)
Chain shirt +2 costs 4,250 gp (likewise)
Bracers are not double cost since they occupy a slot usable for defense.