Well, to be honest, the online retailers and such offered complete sets for right around the $300 mark most times when the sets were brand new, and I was never even remotely inclined to bite on those deals. So, for the price of 3 cases, this is a tough one to go for, especially when you wouldn't be getting all the extra R, UC, and Cs that would come with multiple cases. That, combined with the WOTC's stop production....might be able to demand higher prices for a factory sealed set at some point, but not right now. Maybe in a few years.
