The things you will need are
1:The Cpu Will Be an I5 4460 clocked at around 3.2 GHZ(around $60 on ebay)
2:For the Motherboard we are going for MSI Z97(around $100 on ebay)
3:For the Ram we are going For 8GB of Hyper X DDR 3($60 or less)
4:For the casing we will chose a Phanteks Eclipse P300 Tempered Glass ATX Midi Tower Gaming PC Case(around $70)
5:For The CPU fan we will Go for the one which is inclded in the box(included with the cpu)
6:for the storage we will have a Crucial MX300 275GB SATA 2.5 Inch Internal Solid State Drive($79.99 on amazon) and
a hdd for storing games and other stuff Seagate SkyHawk 2TB Surveillance Hard Drive(74.99 on amazon)
7: For the power supply we will go for Rosewill Gaming Power Supply, Arc Series 450 Watt (450W) 80 PLUS Bronze Certified PSU with Silent 120mm Fan and Auto Fan Speed Control, 3 Year Warranty - ARC450(for $35 on amazon)
8:For The GPU we will go for an Nvidia Gtx 1050ti 4gb gddr 5 ($100 on ebay)