That one has been up there for a long time. When it was first posted it wasn't a terrible price but with the updates on the platform, it's not going to sell at that.
I think the "kit" form is good per the ATF. It's in line with the T/C contender pistol kit with long barrel stock. I'd have to go back and find their opinion.
They haven't had it listed as long as the WIHUNTER guy has had his up...several years at this point.