Super easy way to make money at the bazaar is using the grass seeds trick. Have you unlocked the windmill by Lloyd's house/the waterfall yet? If you have, buy 60 units of fodder and 60 units of fertilizer from the store in town. Make six stacks of grass seeds using that windmill. You'll get 120 grass seeds that sell for around 400G apiece.
If you don't have the windmills unlocked, it's really hard to make money. :O I make a ton of cheese, herb cheese, and mayonnaise with products from my farm, and that brings in a lot of money. I also make quite a bit of jewelry, and things like that.
If you don't have the windmills, your best bet is foraging, really. Buy more animals at the bazaar and use them to sell raw product (like milk and eggs). Gather everything you can and empty out your pockets if you need more room.
