@roxe - Amazon is more expensive to sell on. Will cost you $49.95 a month for a selling plan and around 15% in fees. It's also a merciless platform - spend time on their forums, you will be horrified if you think Ebay is bad.

As an alternative - don't offer free postage on your items, especially your low cost ones. You need to be making money, not giving it away. Maybe change your overall postage to $3.00 to minimise your losses.

Promoted listing are entirely optional.

If your items are hand made, you should also list them on Etsy - you will get better prices there. Have them in both places to maximise your income.