That's still a 50% increase. Still, I've used arabian on cav build since 4ever, and I shouldn't be arguing against a price change. It can only help, I barely make any money as it is. I wouldn't mind if price was readjusted so that it is below all armored horses, meaning heraldic and barded warhorses. If you want a horse that is really overpriced though, eastern horse:
hit points: 111
body armor: 12
difficulty: 7
speed: 44
maneuver: 44
charge: 13
For 31k gold.
More expensive than a padded warhorse:
hit points: 131
body armor: 30
difficulty: 6
speed: 42
maneuver: 41
charge: 24
For 29k gold