It's the same thing. You have to spend 3000 dollars either way. Trade plus 3000.
Or the proceeds from sale plus 3000.
The trade limits your options immensely.
This assume you have to find someone who wants your game at your price and is tradibg the game you want at the value you want.
If you try selling the game, you can take the time to get the price you need.
Then when you find the game you want, you can buy it outright because cash is something everyone wants (while twilight zone might not be).
I could see a trade might being a good option if you only have one game, and don't want to be without one.... But be prepared to wait awhile for the perfect scenario to work out for you. This works out for people who are more flexible in their game options.
Good luck!