Gemini says: Yes, Model Warehouse (modelwarehouse.biz) is a legitimate online retailer.

Operating since 2000, it is a niche e-commerce store catering to scale model hobbyists (specializing in plastic model kits, military vehicles, ships, aircraft, and reference books). It is registered as a business based out of Manchester, Kentucky, and maintains a profile with the Better Business Bureau. While its website design is a bit dated, hobbyist communities and customers frequently reference it as a real, working supplier for hard-to-find or specialty model kits.