here's a few reference builds
Entry Ryzen 3 = 23470
Ryzen 3 1200 5790 CPU
Gigabyte GA-AB350m-HD3 4500 Mobo
Kingston 4GB DDR4 2133 1750 RAM
Corsair VS450 1750 PSU
Seagate Barracuda 1tb 2390 HDD
Tecware F3 Full Acrylic 1540 Case
Palit GTX 1050 StormX 2GB 5750 GPU
Better Ryzen 3 = 28540
Ryzen 3 1200 5790 CPU
MSI B350m Pro-VDH 4550 Mobo
Gskill Aegis 8GB Dual DDR4 2400 CL15 3990 RAM
EVGA 500BV 2620 PSU
Seagate Barracuda 1tb 2390 HDD
Tecware Edge Tempered Glass USB3.0 2000 Case
Asus GTX 1050 Ti Phoenix 4GB 7200 GPU
Entry Ryzen 5 = 28920
Ryzen 5 1400 8590 CPU
Gigabyte GA-AB350m-HD3 4500 Mobo
Gskill Aegis 8GB Dual DDR4 2400 CL15 3990 RAM
EVGA 450BV 2160 PSU
Seagate Barracuda 1tb 2390 HDD
Tecware F3 Full Acrylic 1540 Case
Palit GTX 1050 StormX 2GB 5750 GPU
Better Ryzen 5 = 38100
Ryzen 5 1600 11040 CPU
MSI B350 PC Mate 5900 Mobo
Gskill Aegis 8GB Dual DDR4 2400 CL15 3990 RAM
EVGA 600BV 3020 PSU
Samsung 850 EVO 250gb 4950 SSD
Tecware Edge Tempered Glass USB3.0 2000 Case
Asus GTX 1050 Ti Phoenix 4GB 7200 GPU
note: prices are from dynaquest's website except for the evga PSU which is from PChub