Shieldus
Type: White Magic
Level: 5
MP Cost: 30
Casting Time: 1E
Effect: Increases the physical defense of one party member.
Cost: 1,500g
It is worth noting that both of these shops will be made unavailable not long after they appear due to plot advancement (before the freeze for the middle town store and before the final boss fight in the experimental staff). Shieldus can not be bought at the Auction house afterward so it is in your best interest to save some money to buy it as soon as possible.