Where to Buy Razer Blade 16 (QHD+ 240Hz OLED, RTX 5090)

I am planning to buy the Razer Blade 16 (QHD+ 240Hz OLED, GeForce RTX 5090, Black) and found options on https://www.razer.com/store/gaming-laptops or https://www.orangehardwares.com/ and https://www.ebay.com/. Since it is a premium and expensive gaming laptop, I want a safe and reliable purchase. The official Razer website seems safest with full warranty and genuine product guarantee, but prices are higher. eBay offers cheaper deals, but I am unsure about seller authenticity and warranty support. Third-party sellers like Orange Hardware also have mixed reviews. I need advice from users who have experience buying from these sources.