I started in FB groups. (I know they are hit and miss) I asked for anything and everything. I got some great stuff and some cool stuff and a bunch of garage fillers. Once I figured out how to navigate/negotiate the groups, I started having "Really Good private DM's" with a few agents. I got to know them, told them about me and my hobbies (ie niches) and what I am good at. Then I would ask for more products like the ones I like. Ones that fit me and my niche. I would also tackle some of the outliers no one else wanted to handle. Then it shifts to a private DM group rather than a public FB group. In these groups, all kinds of products are offered, and you ask for the ones you want. This is when I began charging a fee and offering higher-priced items. Believe me, 500-1000 dollar items are readily available. Now I only take what I want and get a commission on every item for some agents. It all adds up. I am also the first choice for many items. They offer me products without even asking the group. Let's just say I am totally into Knitting. I am offered anything to do with knitting or sewing before anyone else. I am not into knitting, but I will tell you it is a great niche. Knitters are some serious crafters.