Backtracking a bit, how many people have ever seen anyone cast the "Iron Pig" spell? Because I agree with who ever it was that said that the situation with Marverni is currently absurd for any nation that use size 2 units. And rather dire for any nation that use size 3 or larger.
Look!
A better price for these for marverni would be 15E for 10 or something. Maybe even more. The thing is, no other nation is using the Pigs so we might as well raise the price to be competitive. Currently its almost like buying Ettins from that nautilus place.