Anyone Selling self published Children’s book through Amazon FBA or FBM?

Anyone Selling self published Children’s book through Amazon FBA or FBM? I know.. it doesn’t make sense to get >x hundreds of book print from China and expect great sales for book. However, if you have a nitche book, I think it’s worth doing so by 1. selling through FBA (not KDP) or 2. FBM from your garage.

Don’t even get me started on royalties from KDP. Its nuts!

So I plan to get my books printed from China to sell through Amazon FBA or sell it from my Garage. Anyone has such experince? Would love to hear you thought on self published books.