Server bills are $1,000/month. Heroku mostly and Digital Ocean.

I'm thinking of moving to a home server, setting up 2 servers (a Staging + Production), with 4 raspberry PI 5's as worker servers.

It seems I can get far better performance, with a < 3 Month payback period...

What am I missing??

Server spec:

Server ->https://pcbuilder.net/rigs/4sg24H/ - $988 /each x 2 + Raspberry PI 5 ->https://www.raspberrypi.com/products/raspberry-pi-5/#:~:text=Buy%20now-,Specification,-Broadcom%20BCM2712%202.4GHz - $80 /each x 4 + Hardware Firewall -> https://www.amazon.com/Fortinet-FortiGate-Firewall-Throughput-Protection/dp/B07ZZMFWJ7/ - $350 x 1 + Switch -> https://www.amazon.com/NETGEAR-5-Port-Gigabit-Ethernet-Managed/dp/B07PJ7XZ7X - $25 x 1

Total = $2,671 (+ time and effort to config) + DataDog

Payback < 3 months

Power cuts - Not had one ever. But, could spin up a server if a ping of the home server goes down Internet disruption - Not ever happened. But would have a 5G fall back router.

What am I missing?? Why is this not more common?