Final Fantasy X Cheats

When you find Yojimbo, wait for him to make his offer. After he makes the offer, which I believe is 300,000 gil, offer him half of what he wants plus 1 gil. He will then lower his asking price. Increase your offer by 1 gil, which will force him to lower it again. This time, he will not take any amount much lower, so offer him about 5-10,000 gil less than what he wants, generally around 190,000, and he should take it.
If not, repeat the process and simply offer a little more than your previous offer.

If you offer him TRIPLE what he wants at any time, you not only gain Yojimbo, but he gives you 2 Teleport Spheres as well.

When you fight Evrae Atlana underwater in Bevelle, simply use some Phoenix Downs on her and she should die quickly. If you don't have any Phoenix Downs, X-Potions and Elixers work wonders against her as well.

During a blitzball game, go to one of the corners on the right side of the arena, also referred to as the easy win bug. While there, put the two players that you want to gain experience side by side, and have them pass the ball repeatedly to each other. Each pass gives you 1 EXP, and if there's at least two minutes on the clock, you can accumulate up to 30 EXP.