How much would a Cobra Ninja Viper mini bust MIB be going for nowadays?

One sold recently on eBay for 137.50.

I know dockingbay97 has one available in an auction right now, and it's at $81 with three days left. He was offering a BIN of $100 after offering it on the boards, I was surprised nobody went for it.

Thanks for the plug

I still have mine up for auction