You're able to build a brand without having to do FBA. FBA is capital intensive if you're sourcing your own products. Dropshipping is less capital intensive, and you can prove validity and get a product to sell without ordering 500 or 1000 units and spending money upfront.
Once a product is proven and is consistently selling you can send it to FBA. However, before you do, you also want to take a look at if it's worth sending to FBA based off if the margins are higher than dropshipping.
Over 90% of Amazon sellers don't do this. This video goes in depth with all that great knowledge.
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