Walmart has the Pokémon Men's Pikachu Slide Sandals (Sizes 7 - 13) on clearance for $4.99 with free shipping with Walmart+ (30-day trial) or on $35+. Other pop culture designs on clearance: 

• Marvel Men's Winter Soldier Comfort Slide Sandals for $9.99
• Star Wars Mens Darth Vader Sandals for $9.99
• Naruto Men’s Ramen Sport Slide Sandals for $9.99