My experience is to think outside of the box
Mainstream markets and online and such are completely crowded and the competition is to much.
Start with your local florist - sell them novelty soaps to include in gift hampers
Start with your local Liquor store - sell them beer soap as a novelty
Sart with your local butcher - sell them lard soap
If there is a local corporate gift place - approach them to include your soap in their gift bags
Visit your local hotels or b&b's or such and sell to them
If you have a racetrack - sell them mechanics soap (aka gardeners soap)
got to your local nursery and sell them soap on a rope gardeners soap that people can hang off their taps
Once you get money for your goods and repeat customers or word of mouth then you will fly.
People buy from people.
And dont take no for an answer
There are so many other avenues to sell soap.
I wouldn't enjoy the math.
Even now that I'm not selling. Just thinking about how much one bar of soap actually costs to make is giving me a headache. That might be one deterrent for me, if ever..
My testers, family members all of them, want to help and insist on at least paying for the ingredients since they're using soap that's much better than any they've used before lol
That's why I sat down to think on it and to make it easier I told them to "pay" me whatever they've saved on not buying soap lol but some aunts are insisting I do basic costing at least. Ugh..
I have an excel spreadsheet with all the oil prices and then i dump in the quantities. Marke up is between 200 - 300% which covers packaging, labelling, labour, petrol and other incidentals.