I just wrote out a couple paragraphs before I realized this was a 6 year old thread.
I tried etsy store my material cost is averaged at $40 a board including packaging and board oil included for edge grain boards 12x18x1+ (using walnut/cherry/maple/yellowheart/redheart/wenge/leopard/etc) Shipping can be expensive 10-20 depending on shipping zone. etsys cut is almost 10% so i priced at 85 or so leaving me 15-25$ profit for a board that takes me 1-1/2" hour to make. And at that they dont even sell. Etsy is flooded and it is near impossible to find my boards on it. You will need to advertise your page on your social media. And then it becomes your family supporting you.
A website is 30-40 a month so if you arent selling 5 boards a month it wont pay.
Never tried craft shows. I suppose they could be the way to go but I have young kids so im out.
I would be happy if someone would supply me all the materials and packaging, come and pick them up, and cut me in $15 a board