All these prices are in US Dollars and for US Market
Cpu : 30 to 50, most likely closer to 30.
GPU: Prices vary wildly and range from 40 to 80 (80 is ridiculous)
HDD: Not worth a dime really, a new 2 TB drive is about 50 bucks
RAM: Maybe 20 or 30 bucks if your luck
Windows 10: not sure since you can download and use unlicensed copy of windows from MS