Final Fantasy X-2/Chapter 2/Guadosalam

Guadosalam is worth visiting in Chapter 2 for some completion points and for clues on where to find the Leblanc Syndicate for uniforms. Upon entering the area, head toward the chateau doors to trigger a scene. After watching the scene, save your game and then head to the inn near the entrance of Guadosalam. Talk to the man behind the counter. He will sell you some "valuable data" for 10,000 Gil if you choose the "Got any data?" option while talking to him. You can then sell that data to someone currently in Guadosalam for a profit. It must be the person that the inn keeper references. The exact person is randomly chosen. It is important you save before talking to him. First because you may need to soft reset the game in order to get the best buyer and secondly because if you talk to the wrong person, the price the actual buyer is willing to pay will drop by 10,000 Gill per each wrong person spoken to. The following chart explains where to find the buyers and the price they pay.

Once you have visited the chateau and sold the data, continue on to the Thunder Plains.