GT Hobby Store is an online retailer serving collectors and hobbyists with a range of model kits, diecast vehicles, and related supplies. Its catalog features Gunpla from Bandai, including High Grade, Master Grade, and other series, alongside model kits from brands such as Tamiya. The store also carries diecast collectibles from makers including Mini GT, Hot Wheels, Tarmac Works, Inno64, BBR, and Kaido House, with additional brands represented across its selection.

Customers can browse model kits, diecast models, tools, accessories, pre-orders, and other catalog collections. The store highlights best-selling products and offers discounts on selected in-stock items, including an automatic 5% discount on qualifying orders over $200, with PG Gundams excluded. Pre-order items are available, though orders containing them ship only after the pre-order product arrives. Free shipping is offered on eligible purchases. GT Hobby Store also provides online account and cart features, publishes shipping and return information, and invites customers to follow its social channels or subscribe to its newsletter for updates.