GameStop is a retail chain selling video games, gaming systems, accessories, and toys. They also accept trade-ins.
Fanatical is a video game and video game bundle seller that offers sale prices for popular titles by working directly with publishers or bundling games into one package.
Walmart is a multinational retail chain that sells a variety of products at low prices. They are known for their "greeters" that help shoppers find products in their brick-and-mortar stores.
Green Man Gaming is an online video game retailer founded in 2009. Their catalog contains over 6600 games.