The Lenovo x3650 M3 and the only a bit older x3650 M2 has dropped a lot in prices, over the last year. Now this is a server you can get to for somewhere between $100 and $200. I would not recommend to buy a $4-500 version,,, go for the cheaper ones and just build them up "UPGRADE" :-)
Link - Intel Xeon X5650 CPU 2.66GHz : https://amzn.to/2Hu7jie
Link - Lot's of NVME : https://amzn.to/2r4F9Pt
Link - The 3 in 1 NVME,NGFF mSATA: https://amzn.to/2r3qYKQ
Link - Samsung SSD 850 Pro 1tb : https://amzn.to/2HtlxQ5
Even just 1$ a month, comes out to the same as Binge-watching all of my 500+ Videos every month.
My PlayHouse is a channel where i will show, what i am working on. I have this house, it is 168 Square Meters / 1808.3ft² and it is full, of half-finished projects.
I love working with heating, insulation, Servers, computers, Datacenter, green power, alternative energy, solar, wind and more. It all costs, but I'm trying to get the most out of my money, and my time.