Chest

A Chest is an object in the game; they cost money but drop an Item when opened.

There are 3 types of chests: Small Chests, Large Chests, and Golden Chests.

Small Chest
Small Chests usually drop items, but can occasionally drop Uncommon or even Rare items. They cost on the first level no matter what difficulty you're playing on.

Large Chest
Large Chests are guaranteed to drop and  items. They cost twice as much as Small Chests. They cost on the first level no matter what difficulty you're playing on.

Golden Chest
Golden Chests can be found on Risk of Rain (Level) and Temple of the Elders; they are guaranteed to drop a item...