Break Into Wall Street paid course - is it worth it?

Hey guys!

After failing several PE LBO modeling case studies I am desperate and decided to invest in a modeling course - but wanted to ask if any of you has done it and if it is worth the money (c.$300)?

I can build and LBO and a 3-statement model, but struggle around valuations - e.g. once my downside cases wasn't negative/realistic enough, once my NWC wasn't driven properly or forecast rates weren't sensible, once valuation was too rich, etc. Therefore, I would like to see 2-3 real world case studies and to see HOW ARE THEY DONE RIGHT. Do you think BIWS course or any other course would serve the purpose?

I'm afraid that if I fail one more case study round - I will just give up and cry :(

Thanks for any help!!!