Money $$$
First, you have to befriend Daryl, and get the seed maker. Then go to Vesta's and by a tree seed. Then plant seed and when it grows fruit (I did apples) put it in the seed maker and plant those seeds until your field is full of trees.
Then pick the fruit and put it in the seed maker (It's good to keep extra fruit for different seasons) and sell the seeds to Van. I made over 200,000 gold this way.
More tricks, tips and cheats for this game are right here - Harvest Moon: A wonderful life cheats
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