What are you spending a significant amount of money on hardware? A used PC is ~$50, assuming you don't already have one. Spinning rust is ~$10/TB:
https://www.amazon.com/HGST-Ultrastar-HUH728080ALE604-3-5-In...
https://www.ebay.com/itm/125797516426
It can be done for less than $100, done well for less than $300.