Chrimata indeed - note that the price quoted in Bushveld's Mokopane PFS (2016) is 7.50 USD per lb of V2O5 not per lb or kg contained Vanadium (V2O5 is only 56% Vanadium by weight)
Ferrovanadium prices are quoted differently as explained here:- https://www.thebushveldperspective.com/vanadium-prices
Vanadium prices are admittedly somewhat confusing for investors new to the commodity.