I agree. $3.80, YOUR cost for soap is way too much. Of course, you're experimenting and just starting, so sales shouldn't be a thought at the moment. 2 hours for 8 bars of soap? I am extremely slow, disorganized and do everything by hand, yet I can still manage five times as much soap.
As for budgets, THAT can be difficult for a small soaper. I want another set of molds to help work around my bi-polar phases, but that's another $100, plus I need some different colorants... another $60ish (minimums and shipping), yet I also need to restock some fragrance oils that are low. Oh, wait, I only have enough OO to do three more batches, so there's another $50, lol.
I tend not to break even, but have been growing my "business" slowly as I make sales. I also have an excellent inventory of gifts when holidays and birthdays come around.
ETA: I apologize for sounding snotty. That wasn't my intention. Just that you should get some soaps under your belt, your technique, etc before selling, and calculate costs then. With experience, you'll make soap much more quickly. As you grow, materials will be less expensive per bar, as you purchase in bulk. I started small (and still am very, very small) and have just been slowly growing as I go. My costs used to be in that $2 range per bar, and I sat back and wondered how on earth people had per bar costs under a dollar. I'm also a sales watcher. I put my recipe together, then slowly started building my stocks for the recipes I use. I would buy whatever I could afford when it was on sale. Slowly, the amount I could buy at a time increased. From 8lb packages of lye to 64lb packages, from 2lb bottles of coconut oil to 35lb buckets. Even one bulk oil can help drop your costs, which then adds more money to the pot for another bulk oil.