I'm going to differ from others. Online arbitrage is still possible on Amazon and elsewhere, if the cost of inventory is low enough. I do 100% online arbitrage (no dropshipping of any kind). My sales are 55/25/15/5 FBA/Walmart/FBM/eBay. I mostly source from Amazon, sometimes Walmart or other retailers, and rarely from the manufacturer itself (but some of my best-selling products come from the manufacturer). I mostly sell my products at $50-200. My rule of thumb is to buy inventory for 50% or less of what I expect to sell it for, so that means paying 100. Obviously the lower the better. If I have confidence in selling an item for more than $200 I'll go above 50%. I did $300K (+25% yoy) in revenue in 2023, and ~$85K (+39% yoy) pretax profit. I prefer to focus on return on investment. That $85K came from $149K in inventory; that is, I spent $149K for the inventory that I sold in 2023, I got that $149K back, and earned $85K in addition, so a ROI of >55%. I agree with u/CoyotePuncher about this strategy not being viable for "upper level" annual sales (let's say seven figures). I'd love to prove him (and me) wrong, though! CC: u/catjuggler , u/mttl Answer from TMWNN on reddit.com