Look into selling them. KC Grand Championship usually goes for at least $30 by itself. If you seriously have the Season Sets they go for huge money as well. Has to be the legit FUNimation sets though. If you somehow get Dawn of the Duel, Part 2 routinely goes for $40+ and Part 1 can easily go for $90+.
They are legit. Season 2 and 3 were $25 each. And I forgot which part of dawn of the duel he had but both were $8 each. We both knew how much they are worth, well I do now he told me to keep an eye out for DotD for him.
He's going to keep them but if he ever sells I'm going to demand a finders fee lol.
Edit: this was all at the same store I picked up kuonn, phantasy star, and knights of the round from. I've actually gotten great deals there; rule of rose complete for $30, LOZ a link to the past complete in box for $20, digimon world 3 for $10 a few times, Minish cap complete in box for $20, more Pokemon movies recently for $5, persona 4 strategy guide for $4, and digimon world strat guide for $2 just to name a few.