I have never heard of this program, so everything I'm saying is based on what I'm reading on the website. From what I found in a quick Google search, it seems that Karen Ferreira focuses mostly on teaching and supporting people who want to self-publish. Is that the direction you want to go?
It's three weeks of assignments for $47, which is quite reasonable. Personally I am not a fan of the kind of sales pitch she has on her website, where this piece is valued at this amount and this piece is valued at this amount, but she's going to give you the whole thing for a far lower price.
Most online courses from reputable places like the Writing Barn, Highlights Foundation, or SCBWI webinars are quite a bit more expensive, but you know you are getting good quality from well-published, well-reviewed instructors. So it makes me wonder what you are getting for only $47.
All that said, the reviews from prior students seem very positive. So who knows?
If someone has personal knowledge of this program, I am perfectly willing to be corrected.