It would be good to know a bit more, but given that both the CPU and GPU are low-end, regardless of what board it has or what case it's in it likely won't be worth much at all.Yeah needs more info for specific parts such as mainboard, RAM brand/speed, HDD or SSD info, case model, PSU, etc.
That being said it's probably worth more to keep.
Depends on what motherboard, psu, case, any extra fans or bells and whistles involved.
Not necessarily.
I agree. As I said, even if it's in a nice case or has a few other nice bits, that CPU and that GPU will bring the price down if you're trying to sell this as a gaming rig. Two of the most important components for a gaming rig (in fact: THE TWO most important components) are poor.Definitely gotta have several bells and at least 1 whistle to command a higher price.