After seeing people speculating about this, I thought I would post my insights, as I regularly have being working the auction house on a daily basis, and some times prefer it over actually playing this Godforsaken game.
Anyhow, While the min price restrictions are playing a role in this, not many are talking about the actual elephant in the room, which is the fact the demand for MUT cards has lessened significantly since MLB the show dropped.
Ever since that weekend when mlb the show came out, the amount of cards that were selling has decreased, since there are less players playing the game. When you combine that factor with the inability for those who prefer to naturally undercut the market (A-holes) having that possibility removed, you now are in the perfect storm that I call the Quarter 2 Mut 24 auction house.