PokillionairePokémon card chains to skip in Japan: Hobby Station, Yellow Submarine, and MINT.
Hobby Station: Small selection, high prices. Only Ikebukuro (4/5) surprised me.
Yellow Submarine: Never found a card worth buying across all branches.
MINT: Appealing interiors, disappointing cards.
Spend your time at C-Labo, Ninnin, and Sunrise instead.