Four initial thoughts:
1 - How does this differ from feeding ChatGPT your CV content, and the copy from the job posting?
2 - To that point, $2 is a high bar given there are no samples, examples, success stories, etc.
3 - I'm not being a nit-picky critic. I'm legitimately trying to help.
4 - Being able to generate a targeted (to the posting) CV *and* a cover letter...now that might worth rolling the dice and wagering a couple of bucks.