Constant rising prices drives off buyers. They decrease production runs which causes them to increase prices again. Vicious circle. Thats part of the reason you'll see them focus on DC.
They'll be able to price these figures at the current "going rate" but because the line is new and all the rage they'll produce them at higher levels than Joe.
Once the fad dies down, as it did with Joe, then SSC will have to raise prices on the DC items again and you'll see the same cycle we've seen with Joe, LOTR, Indy, etc where despite mark ups and margins being the highest they've even been for that line, the quantity being sold isn't enough to make releasing figures intriguing.