This trick requires two characters. When starting a new character, you are always given an Adventurer's Coupon. When given to the correct person, you will obtain 50 gil. Make two characters and have the character that will be your main character be in his Mog house (preferably in order to get to the Delivery Box faster) and have the second character go to the Auction House in which ever country they are in and deliver their "Onion" weapon and Adventurer's Coupon to the main character. You can use the Adventurer's Coupon repeatedly. When the main character has received the items, delete the second character and make a new one with a new coupon and weapon. As for the weapon, put it up on the Auction House for about 100 to 200 gil. You can repeat the process as many times as desired.

Whenever you get Crystals in battle, put them in an auction for about 100 gil each. You will make good money this way, or you can put them in your bazaar for about 50 gil each.

At 6:00 in upper San 'Doria, the Wood Guild opens. There, you can by Arrowwood Lumber for 7 gil each. They sell for approximately 100 to 150 gil each. Also, the Luaun Lumber makes a profit, but not as much.

This trick requires three party members in Bastok. Behind the lighthouse in South Gustaberg is a bush labeled as "???". There, you can trade a Quus to have Bubbly Bernie spawn. He is not very difficult to defeat and drops a Steam Clock. If you set the second person to Quartermaster and make him wait at the entrance to Bastok Mines, he can run into the auction house and send it to the third person, waiting at the Mog House in Bastok Markets. The third person should take the clock to Malene in the very northern part of the town. She will give you 500 gil per clock. You can repeat this as many times as desired. Note: You can only hold one clock at a time, but you can have as many as you desired inside your delivery box.

Once you at about level 5 (depending on your main job), collect Silk Threads from Crawlers in either East or West Sartabaruta, outside of Windurst. They can sell at the Auction House for 1,000 to 2,000 gil each.