I found this code:
How to get easy money on FF7
1. Walk around the desart near golden sauser for a while
2. Sooner or later a little cactus man will appear
3. You cant defeat him with magic or weapons
4. To defeat him you summon Chocobos OR Mogs
5. He is worth 10,000 Gil
Here: Final Fantasy VII (7) Hints
I currently just got to the Saucer, and need money, what desert is near the Saucer, it is up in the sky.