For points, four 15mm cavalry = 16 points.
These alien cavalry figures are very, very cool Tamsin. I really like the mottled brown of the mounts' shell carapace set against the vibrant colours of the riders' saddles and their weaponry. The basing, like your previous infantry in this series, is excellent as well. It reminds me of a beach where the tidal wash has just receded. Lovely work.