Vendors

In Undertale, there are multiple locations where you can purchase various wares from NPCs with Gold. There are four main Vendors, with one in Snowdin, two in Waterfall, and one in the Core, and several more minor Vendors. No vendor will purchase items from the player with the exception of the Temmie Shop.

Main Vendors
Snowdin - Snowdin Shopkeeper

Waterfall - Turtle Shopkeeper

Temmie Village - Temmie Shop

Hotland/Core - MTT-Brand Burger Emporium

Minor Vendors
Ruins - Spider Bake Sale

Snowdin - Ice cream Stand

Waterfall - Ice cream Stand

Hotland - Sans's Hot Dog Stand