From the Super Mario Wiki
The Deepdown Depot is a shop located in the central Rogueport Sewers during the events of Paper Mario: The Thousand-Year Door. The store is run by a female Toad with an orange-spotted cap. Whenever she talks, she commonly says the word "um" before a sentence. In the right-hand corner of the shop, two crates filled with Gold Bars can be found. The store has some cracks in the walls, though it still appears to be sturdy.
Best selling prices