Nina's Stores

Here, you can buy new items, or (much more commonly) you can sell existing items you've discovered in the dungeon.

Tips on selling items
Because you can only level up your party members by paying money at Zordan's Training Area, it's extremely important to sell back any items you don't need. Here are a few tips:
 * 1) Bear in mind that you can only have a maximum of 5 party members at one time. By removing any equipment from knights who are on the bench, you can free up older/duplicate equipment for selling.
 * 2) For anything you don't want to part with (for example, your 5-7 best armor/weapons/accessories, decent weapons that can only be equipped by a single class), you can mark the item with "Protection" in the Equipment selection screen. That enables you to...
 * 3) Choose "Bulk sale" to quickly sell any items that aren't explicitly protected in one fell swoop to save lots of time.
 * 4) To save even more time, you can go into Settings (click gear icon on Town main page) and change the "Auto sales setting" options so you automatically sell items up to the selected certain rarity level as you return from the Lighthouse.

Items for Purchase
At Nina's Stores you can purchase a few Common-level items. This is a bit silly since you can find these items—including rarer versions—for free in the dungeons, but hey. Whatever floats your boat.

Ingots
N/A