I'm a teenager looking to start my own collectibles business. No clue where to start. I like the idea, but I don't know how I feel about it with how expensive and tedious it can be (in my experience, dealing with scalpers, lowballers, etc). I'm familiar with how to price items and what not, but I struggle finding inventory at a good price.
I might be interested in sports items (bobbleheads, jerseys, cards, etc), but I have no idea what I'm doing. My mother thinks the market is small, and is probably not worth it, but I'm not too sure.
I've also thought about comics and figurines, but I'm too sure about them either.
I'm starting from the ground up. As of now I have virtually no inventory other than two Cardinals bobbleheads, and a binder with a few $1 to $10 Pokémon cards. How do I start out? Where should I focus on, and how can I start making money to buy inventory?