Roman cavalry 1st Century AD

Our hobbyfriend Darek heared from our next diorama project, the battle of the Thames River 43AD.

So he sculpted some Roman cavalrymen for this project. My problem is, we would need three mold for this unit - and molds are expensive...

I am not sure, if these figures would be something we can try to sell in the shop to cover these costs. What do you think about them?