I did find the game intriguing - though even through my Nvidia panel I couldn't get graphics anything like seen in the screenshots - but the real money rental system was probably the terminal turn-off.

As with Atlantica, I just cannot get my head around these item malls that rent out perks ; consumables make sense because at least they accelerate progress or allow permanent reselections, but making impulse "ooh, shiny !" buys evaporate after 30 days baffles me.

As has already been pointed out, you can rent horses for in-game gold, and it's about $20 if you want to buy one permanently.