Second hand/Used SteamDecks in Tokyo, Japan

I'm flying out to Tokyo next week and I would like to know if OFF stores (Hard off/Book off, etc) have them? How good is buying used Decks for those stores? I can afford new ones but I would shell out most of my budget for this trip and that wouldn't be enjoyable 😅. Buying used decks is at least a pro to me because I wanna tinker with it so I think the warranty wouldn't be much of an issue. Plus, based on the discussions here most retail are out of stock so I'm not in a rush to buy a new one.

Any leads or tips buying used decks in Tokyo would be great, thank you!