Is there a way to check when the course was added? Some courses might be outdated and there is really no point to buy those courses.
If the course date is posted, I’m not aware of it. When I had a monthly membership I would skip to the the installation video for whatever technology was being taught and the version was usually visible. Then I’d do a web search for the release date.
Older courses also seem to be deeply discounted - sometimes as much as 87% off the original price.
Some courses are a few years old, but still work pretty well, whereas others (e.g. React Native, Docker) were out of date enough that some examples no longer worked. Sometimes the issues were surmountable with a bit of research, but in other cases it became more than I wanted to deal with.