Just beacause you have 200 Job Points doesn't mean you should use it to buy that worthless Ability.

Somtimes a Job class only has a few good abilitys and they are usually the most expensive ones.

Saving Jp is usually worthwhile.

Remember that Brave Faith and The Zodiac Compatibility all affect characters attacks and defences. (Took me a while to learn that)

Monks are cheap because of the no weapon thing and are also just as strong as someone with a sword if there Brave is relativly high.