Wealthy Affiliate never lock any website. As long as you have purchased your own domain name, it’s yours 100%. For hosting, WA doesn’t charge any additional charge for web hosting. It’s included in the membership price which I mentioned earlier on. If you’re referring to the domain name, one domain name costs around $14 to $16 per year. So I really don’t know what’s the expensive hosting you’re talking about.
First of all, I’m not saying you MUST host your website at ClickBank. But if you’ve started building website using their Builder tool, it’s hard for you to move it somewhere else, not because they hold “hostage” to your website. It’s because the contents are built in such a way that it can only be shown properly using their Builder. When you move your website to somewhere else, you have to spend a lot of time re-doing all the content to make it look visually appealing. You get my point here? This is just like many other content/page builders. Once you stop using the plugin, your content is no longer readable.
Clickbank University is a good product that's worth the monthly membership cost of $47/month. I think that for someone looking to create and promote their own digital info product through Clickbank, this is probably going to be your best investment. If you are an “expert” in something and want to make money off of your knowledge, now's the time to start!