Something like this would be decent...
PCPartPicker part list:
https://pcpartpicker.com/list/tdkcD2
Price breakdown by merchant:
https://pcpartpicker.com/list/tdkcD2/by_merchant/
CPU: AMD - Ryzen 3 2200G 3.5 GHz Quad-Core Processor ($87.99 @ Walmart)
Motherboard: ASRock - B450 Pro4 ATX AM4 Motherboard ($64.99 @ Newegg)
Memory: G.Skill - Aegis 16 GB (2 x 8 GB) DDR4-3000 Memory ($79.99 @ Newegg Business)
Storage: Kingston - A400 120 GB 2.5" Solid State Drive ($21.99 @ Newegg)
Storage: Western Digital - Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive ($44.89 @ OutletPC)
Video Card: Gigabyte - Radeon RX 570 4 GB Gaming 4G Video Card ($129.99 @ Newegg)
Case: Thermaltake - Core G21 Tempered Glass Edition ATX Mid Tower Case ($39.99 @ Newegg)
Power Supply: Corsair - CXM 550 W 80+ Bronze Certified Semi-Modular ATX Power Supply ($43.98 @ Newegg)
Base Total: $584.82
Mail-in Rebates: -$75.00
Shipping: $3.99
Total: $513.81
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-03-12 21:42 EDT-0400
Good deal on that case! Should perform similar to this...
View: https://www.youtube.com/watch?v=0spQ_hNrRG0