I have personal experience with this cure. I obtained Euphorbia peplus seeds from Beautanicals in Australia, about $3.50 plus $5 for shipping. Grew a number of plants, harvested up to three leaves per day, applied the milk sap from the plant directly on a small bcc. Bcc was completely eradicated. Email if you have more questions.
I would recommend for BCC, actinic keratosis, or SCC if it hasn't spread. Results were much better and didn't give me the massive staph infection I contracted when I had a bcc removed surgically via Mohs surgery.