Sam Kolder Masterclass / Kolder Creative

It looks like overpriced trash. When you're buying something for $800 USD that brags about 10 hours of training and partnering with other brands to offer you work, you should really ask yourself if people should pay money to be offered work and if its legitimate.

Looks like overpriced garbage being sold on personal branding.

I've came across his work a couple of years back. I don't believe he is a photographer so I am not sure what photography related advise you may be expecting.
I checked the link and seems like an in-depth course that is well worth the price, if it delivers the content it promises. He has some very good videography talent and if he is charging $800 for you to learn all the process from A to Z, it is peanuts when you consider how much you will learn and the possibilities to take your business to a new level, get more clients and so forth. I can assure you, you will probably learn more from this course than spending a year in a film school, learning outdated techniques, while paying 20 times that.
Likely, you can spend a few weeks on Youtube and gather similar training videos for free, but it may not be cohesive, applicable or possibly as in-depth. If you are an advanced in video, you are likely to find the free Youtube content more applicable as you already know what you want, developed a style ,etc and can pick and choose. If you are new-intermediate in your skills, these workshops, seminars and teaching courses are great way to learn and you will learn a lot.

Look for B&H on youtube for free lessions first. You should get a sense if you even want to be in this industry. Here is one:

I have heard the name before but honestly have never seen any stuff by him before. I think you’d probably be better off to start by watching CreativeLive (you can watch live stuff for free or buy individual courses or just get a month’s subscription and consume as much as you can for a month. Another idea is watch for the next 5dayDeal which is a bundle put together every year that’s usually $80-$100 and usually includes courses from like 20-25 different people and sometimes programs or plugins as well.