We are now selling more of our handmade parachute cord mini jigs on Amazon than any other venue. We are selling so many we are having a hard time keeping up. We also got a conference call from Amazon practically begging us to offer them as FBA or fufilled by Amazon so that it can go in Amazon prime. We worked out the numbers and it would be in our best interest to do this, but so far we can't get far enough ahead to ship them to Amazon. Its a good problem to have!
I also sell many of my same crochet and knitting supplies on Amazon and they are doing very well. I do hate though that I have to mark things up to sell on Amazon (their fees are higher) It does make a huge difference in sales on Amazon depending on if you get the buy box. I always know when I have the buy box as sales triple. But the formula for winning the buy box is mysterious. Its a blend of who has the product, who is a Featured Merchant etc.
Still trying to figure out how to sell internationally on Amazon but for now we are only selling in the US.