So long as we're just talking about programming stuff, I find Safari Books Online ($400/yr) to be well worth it. When you compare the value to the Angular classes mentioned in the OP at $130/each or $280 for the whole package, I'd think Safari is the obvious choice since it gives you access to so much more. While it's mostly books, there are a lot of video cources too. They have a free trial so you can see what they have first.
Before I subscribed to Safari, I subscribed to Packt Publishing's similar service ($100/yr) at the time. They also have video courses, but mostly books. All of their books are on Safari too. I found this so useful that I "upgraded" to Safari after the first year.
Outside of programming, in the days before MOOCs were popular, I had purchased a lot of The Great Courses classes. They are top notch, and live up to their name. Most of the ones I bought were on art history, general science/astronomy, and history. They are very in depth, usually anywhere from 30-60 hours of lectures, plus reading materials. I know they have a subscription service now, but last I checked the courses that would interest me most were available as part of that. They did (maybe still do) play games with their prices, having them cost $300-$400 regularly, then going on sale for $100 or so every year. You might also look for used copies on Ebay.