What's a decent price to sell a PS4 for?

I bought a PS4 back on Playstation Day when it was 200 euro, mainly to play through exclusives, now that the exclusives are finished and the PS4 is gathering dust, I would like to sell it on.

I have checked CEX and they are giving 159 Euro Cash or 197 Voucher. Still waiting on a reply from a buddy who works in GameStop for there trade in prices.

Would 225 be fair? It also comes with Uncharted 4 aswell.