What about building your own PC:
Code:
Case: Cooler Master MasterBox Q300L (micro-ATX), 45 euro
Power supply: Seasonic Focus Gold 450W (80 Plus Gold), 60 euro
Motherboard: Gigabyte B450M DS3H (micro-ATX), 70 euro
CPU: AMD Ryzen 7 1700 + cooler (8 cores, 3.0-3.7GHz), 130 euro
Memory: Crucial Ballistix Sport LT 32GB (2666MHz), 115 euro
Storage: Adata XPG SX6000 Lite 512GB (NVMe M.2), 70 euro
Total:, 490 euro
Costs excl. energy 1 year:, 41 euro p/m
Costs excl. energy 2 years:, 20 euro p/m
Costs excl. energy 3 years:, 14 euro p/m
Grabbed the parts, did not check if they match all.