please note whilst you are allowed to ask people for advice on value of a pc or individual components you must not try and advertise the items for sale on here , if you do the forum editors will remove your posting.
NOTE.... if you sell the pc as a complete machine i would advise you to do a clean install as this is the only way to guarantee deleting all your personal data . Put 1 game back on it ( not internet based ) just to prove it works !!! Dont reinstall anti virus because when it runs out some companies can renew subscription unless you say no , if its on for the new owner and that happens the money will come out of YOUR bank account.