Used/refurbished PS4 is $250-400. Decks are about 50 bucks each, unless it is a shop deck or an undesirable brand or blanks. I would value blank decks/shop decks/undesirable brands at about 30-40 dollars. I'd say a cool three hundo worth of boards is adequate for a trade, maybe tree fiddy. Maybe throw in an extra deck if dude is the homie.