Nope its not worth , because you won't be getting much sales from FBM (Fulfillment by Merchant) , all you need to do is FBA to get those constant sales ....unless all your main keywords are ranking on page #1
Its like anything else online.. some people are killing it, more do OK, and a lot of people suck at it. It just depends on your understanding and how you execute on the process of being successful.
I was doing amazon to amazon dropshipping, my account got suspended within 10 days after a few items sold and still no solutions even they didn't release my money after 90 days, so if I were you, I would go with fba which is less stressful. In my case, looking for recommends what might I do to get my money from them? ⊗⊗⊗⊗ invoice would it work or any better solutions to try?