Keep in mind that, if the AoR core book's Force rules are 1:1 with the beta book's, a Force Rating of 3 would also cost a lot of XP since you'd have to buy both Force specializations (FR 1) and the Force Rating talent (+1 each) in both.
It's a matter of perspective. When I first got into the game I thought 250 XP was a lot of XP. Now it doesn't seem like that much at all.