Amazon.com: CanaKit Raspberry Pi 4 4GB Starter PRO Kit - 4GB RAM : Electronics
Official Original Raspberry Pi 4 Model B Dev Board Kit Ram 2g 4g 8g 4 Core Cpu 1.5ghz 3 Speeder Than Pi 3b+ - Demo Board - AliExpress
Amazon.com: Vemico Raspberry Pi 4 Model B 4GB Set RAM 4GB Base Starter Kit with SD Card, Heatsinks, HDMI Cable, Power Supply, Black Case, Reading Card Device, Screwdriver : Everything Else
Raspberry Pi 4 4GB
Raspberry Pi 4 Model B Solo Board - 1GB / 2GB / 4GB / 8GB RAM