In my view, this membership charge is far too high, certainly for me in the UK. 10 per year would be reasonable.
This $100 fee might be OK for professionals who probably don't need this site anyway.
The site is excellent and the videos which I can access are really helpful but I was extremely disappointed when the fee was introduced once the videos moved on to the steps for higher badges.
At least there are a lot of good teaching videos available now for free in You Tube etc.
I am very disappointed, as I would prefer to use your site.