Purchased on Friday, it's Sunday and i'm already putting my first app onto Google Play with it (Ok so it's pretty simple but that includes time spent learning the features).
It's pretty obvious, from the portfolio of well known indie titles developed with this, that in the right hands you can go very far using this product.
As easy as it all sounds, there is a bit of a learning curve, mostly familiarisation with the object & event types on offer (how they work, what they can do for you, how to make them react & interoperate etc..).
Even though there's no actual coding (apart from some expression editing for calculating Set values), it will help if you have a grasp of software development/coding logic. For example, if the idea of using an array to store data or creating an iteration to perform a function on objects based on conditions are alien concepts, you might want to learn some coding to prime yourself.
There is a fair amount of documentation in the built-in help system, but it's a little light on usage examples. Luckily there's a few really good youtube channels with walkthroughs.
The built in physics engine is pretty mindblowing, goes as far as detecting collision on a per-pixel level!
Overall, excellent budget-level tool for 2d mobile app development - in the right hands, it's capable of churning out some cracking results.
I haven't seen or used anything as scalable for the same price tag.
Protip: There is no AdMob support for android publishing in the Standard edition, so if you're thinking of using AdMob in your apps, you'll have to go for the Developer edition which is a bit more expensive - wasn't clear on this before purchase but considering Dev edition upgrade anyway so not feeling too sore :).