The Raspberry Pi 4B 2GB is $55 on CanaKit, PiShop, Seeed Studio, and MicroCenter.
The Raspberry Pi 3B 1GB is $35 on CanaKit, Adafruit. The 3B+ is on PiShop for $40.
The Raspberry Pi 3A+ 512MB is $25 on CanaKit, Adafruit, PiShop, SparkFun.
The Raspberry Pi Zero 2 W is $16.35 on CanaKit, $17.25 on PiShop.
We are unavoidably headed at financial collapse, authoritarianism, and potentially the collapse of Western civilization. And ya'll are worried that you won't have 8GB of RAM in an embedded GPIO computer for your hobby? Maybe it's time to make the ultimate sacrifice: use less RAM.