PC on req.12 15^50 fellblade

What would a 15^50 fellblade go for at req.12 since I want a good fellblade but the lower reqs seem pretty dang spendy (at least for me)

from sticky:

req8 15^50, ~200-300k
req9 15^50, ~150-250k
req10 15^50, ~75-100k
req11 15^50, ~50kish
req12 15^50, ~25-40k
req13 15^50, ~20kish

Yeah, around 40-50k.