Tiffany, you can really start getting seen at any number of items, but it does pay off to have more. Depends on your daily activity in your shop and on Etsy.
I TOTALLY know what you mean about working with a budget when it comes to making items for your shop. In the beginning, I was making jewelry on a much lower budget, so I would go to thrift stores in my area, buy older cheap jewelry and cut it up; make it into something new. I also found a lot of sellers on Etsy in jewelry supplies that would really have good deals. If you really think about it, you can make amazing items from stuff you find (fabric wrapped button earrings, tin can upcycled jewelry, etc) if you are into that sort of thing.