Before going to games top, I recommend a hopping around. Ebay, offer up, and other more local sources usually have a better deal. They usually come with games included and a memory card, but even if they don't, the price is usually lower unless it's a special console.
On the website there is a section for trade calculator. And then if you take it in to a store just ask if they have any of those 20% bonus coupon cards for trade ins. Most of the time if they have them they will give you one, use it and that will be the best amount you can get for any and all trades.
Maybe 75 bucks
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