Looks like if you get it down to 1.5-2 hrs, they should be affordable..and sell well.
My buddy used to get single sided arms built out of several blocks of billet. First they had to add computer capacity to the mill. Run time was over 40 hours, they got it down to 32 ish, i think..for one swingarm.. Lot of runtime.
Good luck with them,maybe you can have a Christmas TREE sale..heh..heh..