A couple of the tallow-based Yardley bath soaps are available for under a buck, shipped free with Prime. My local 99cent store used to stock some but doesn't seem to have them recently so I grabbed a couple.
Lavender
https://www.amazon.com/Yardley-Lond...glish+lavender&qid=1558216835&s=beauty&sr=1-2
Aloe & avocado
https://www.amazon.com/Yardley-Lond...+ounce&qid=1558216860&s=beauty&sr=1-1-catcorr
Lavender
https://www.amazon.com/Yardley-Lond...glish+lavender&qid=1558216835&s=beauty&sr=1-2
Aloe & avocado
https://www.amazon.com/Yardley-Lond...+ounce&qid=1558216860&s=beauty&sr=1-1-catcorr