Do you have a demo account that people can use to test out the functions and menu system to see how stable it is?
No sorry, there's no demo.
CAT is very stable anyone could confirm
I confirm it is running rock stable (Ubuntu Linux, rather slow virtual machine).
Also is there anyone who has actually used this bot and can provide proof that it actually works and makes a profit?
Just someone
I may be interested in buying, but need a bit more reassurance from real users
You can take a look at my feedbacks here :
https://bitcointalk.org/index.php?action=trust;u=130152Click on "Show ratings." under Untrusted feedback to read all the feedbacks
I use the C.A.T. with 4 plugins and I am pretty happy with it.
I confirm I got a solid and well working software for a fair price. No guarantee to make money with it, but it simply works as advertised and Sampey is great to deal with. Not to forget the free lifetime upgrades he provides (and he really does release a lot of upgrades as can be seen in this thread).
Whether you will be making profit simply depends on your strategy and how you use C.A.T.. I can honestly say I've made some nice profits with less than a BTC base capital in a few coins but then I lost about the same amount for letting C.A.T. trade the wrong coins and having not configured the markets in question to avoid it (I am very talented in doing the wrong trades ath the wrong time - I can't resist catching falling knives for example...).
So if you know what you want to trade and how, C.A.T. can do that for you all night long and you will make profit. If you expect it to just do the right thing if you give it some coins, you are expecting something C.A.T. doesn't do.
HTH