Here’s the problem with drop shipping. It’s usually a race to the bottom. Generally, lots of people have access to the same products and the same marketplaces to sell. You end up competing with people who are drop shipping from the same supplier as you. So they start competing on price. Each person undercutting the other until the price you buy it for is equal to the price you can sell it for. There is no margin at this point and it’s not worth the work. The only way to win is to get an exclusive or find a product that you can get cheaper than everyone else trying to sell it can. It can be done, but not usually through regular drop shipping companies. You need direct relationships with suppliers.
Source: Reddit.