I've only paid for one course and it and ended up being more marketing and hype than actual value.
I've tried cohort-based workshops on being a creator, but in reality I knew most of what they were teaching from their public content.
What I've found to be most valuable is following your curiosities and sharing it.
Yes there are micro-hacks and little optimizations you can do to increase productivity or efficiency that people might paywall, but you just need the 20% of things that generate 80% of the outcome, the rest of your time you can spend on the thing you're actually doing.
I would only consider purchasing things if they are transparent about what's inside, it's specifically tailored to your needs, and if they have a results or satisfaction based guarantee for their service. You can read more about this in [[How to be a credible creator]].