Eh, Golden Sun deserved a better sequel with better writers. It wasn't a bad game at all, and is still one of my favorites, it just feels a bit... unfinished? Like they started something good but then dropped it near the end.
The puzzles are fun and the battles still enjoyable. I also particularly love the animations, and if you're looking at getting back into gaming after a long absence then this might be a good game for you to play as the battle system is nice and simple.
As for if you are asking about resellability, well, I wouldn't know about that.
I merely stated a fact. If you'd like, I can state it once more, for good measure... -Nikolai Nikolanikov