Selling Equipment

Equipment fetches half its cost when sold. In contrast, trade goods and valuables—like gems and art objects—retain their full value in the market place. The Dungeon Masters Guide has prices for magic items.

Here are all the important items listed:

Mundane Equipment

Armor
Weapons
Adventuring Gear

Mundane Items

Mounts and Vehicles
Trinkets
Currency
Poisons
Tools

Mundane Crafting

Crafting of mundane Items