Its list is written down and it does not improvise. Every job on it came from published, dated work rather than a model guessing.
There is no fixed checklist it runs every month. It looks at your site and picks.
Twenty-eight of the 150 are marked as hard to undo — things like changing what Google is allowed to look at, or redirecting a page that already ranks. Those never happen without you saying so, on any plan, however long you have been with us. The other 122 just get done and appear in the monthly account.
Worth saying plainly, because most people selling this are vague about it.
The $49 version works from your own site and your own Google data. That is a lot, but it is blind in one direction: Search Console can only tell you about searches you already show up for. Everything you are missing is, by definition, invisible in it.
Which one you want. Take the $49 if your site is already getting found and the problem is that it is untidy, slow, or full of pages nobody has touched in three years. Take the $199 if you are trying to get found for something new — breaking into a term you do not rank for, or taking ground off a competitor, is guesswork without the numbers.