How much is my notebook who can't compare?

Have before my notebook for sale but somehow I find the Internet not the notebook which I own to compare the prices. Although I find the same model but they are all weaker than mine. That's why I hope that one of you knows about this and can tell me an approximate price.

Model: Asus R752L

i7-4510u

12GB DDR3

Nvidia Geforce 840m

Windows 10

1TB HDD

USB 3.0

Bought 2015

If operational, 150-200 euro.

I think with luck 100 euro in good condition 120 euro.

Something between 400-500 euro, I would rate the device with a bit of luck maybe up to 600 euro… But definitely at least 300