Question for small businesses that ship stuff

[Sherman A1]

1. I did this in the past, very long ago when I owned a game store

My prices were pretty much fixed by the manufacturers so I had no wiggle room there. In my case mail order in those days was simply extra sales for my brick and mortar store (before online shopping became a thing) so I often ate the some of the postage costs as the sale was gravy to me.

I would suggest that if you can I would adjust your product prices upward to get to the margins you are wanting rather than try to fiddle with the shipping and handling end.

That's my 2 cents for what it might be worth.