Huh? You can get the T50RP for $75 when they're in stock. Think of it this way...without mods, I probably wouldn't pay $30 for them. They sound awful. With mods, they have the potential to rival headphones costing $200-300+. I wouldn't even consider the M50 against a modded T50RP.
i'm a faint of the heart person when it comes to mods X(