I've used cracked SEO tools for years (not from the site in question), they work well. If they stop working and you like them, buy it. If they are shit and all IM 'guru' hype tools, then don't buy it. I've been using Senuke for years and it's cost me in total around $50 for the tool. It's not worth $147pm and never will be. It's pretty good, but very flawed at the same time. Other tools are better.
CST tools, you get too many and you need to know what you will do with them to make money. For what it costs to join, it's worth a shot if you know which tools you want to use. If you have no idea, then don't buy them until you have figured out a strategy and the tools will come in useful for that strategy.