A friend of mine who sells on EBay suggested I raise my prices and eliminate the shipping charge. He said he did that on EBay and had better sales, he said people fell they are being over charged on shipping.
I have not tried, but it is something that's not feasible for my shop. Not sure people would go for a $10 bar of soap and $0 shipping, even if they are paying $10 total for a $6.50 bar of soap and $3.50 for shipping as I have it now.
If you are shipping domestic as well as to international customers there is quite a difference in shipping rates. If you have the highest possible rate included in each item price I suspect you would have fewer buyers.