You can sell anything you want as long as it is legal and done fairly. Depends on the type of store. I do vintage and antique, so I am into jewelry, dishes, glass, figurines, art - all sorts of things. Collectibles. Now I have added some boutique items.
If you want to specialize, maybe stick to that and get it going, but if you have a variety, just be sure you are being fair, honest and compliant with the rules. You can jump in with jeans, and watches and shoes. Or dishes and jeans, and plants. When a buyer is looking, they will look for jeans for example. your watches and shoes will not pop up. Use accurate descriptors. Vintage watches is not the same as NWT watches. Don't list watches shoes jeans in every title so they come to your store. You will just make a lot of people irritated. Title and categorize NWT Jeans Womens sz 12 Levi. For example. you will get people that want new jeans for women in size 12 or that want Levi jeans for women. You want to attract buyers and not window shoppers. Window shoppers are great unless they are never going to buy women's jeans and want mens jeans. Make sense? The category happens after you make the title. Just stick to the category and let the rest go to their respective categories. When I want shoes, I don't want to see your jeans. If I really like the shoes, I can choose to click on your name, and go to your store. I might just have to have that watch, or I might save you so I can visit again later.
