Gamestop TIV for a ps4 1tb slim is currently $160 ($150 for a 500gb reg ps4) BUT you get a $25 extra credit boost from now until 12/2. However, if you are planning on doing the swap I'd go TODAY, they will probably drop trade values since its a bit insane they will give you $185 for a ps4 slim, and you can turn around and buy a new PS4 1TB slim for $199 that comes with spider man. You can check if the store near you has stock of spiderman 1TB ps4 slim (click view stores to see which stores around you have it in stock)
https://www.gamestop.com/ps4/consoles/playstation-4-1tb-marvels-spider-man-bundle/169461
Its $199 this entire week, no extra deals on black friday itself, so its just a matter of getting to one before they sell out. Its also $199 at best buy, target, walmart, etc but gamestop is the only one that'll give you a high TIV if you bring in your old ps4/xb1.