I've learned (guess how?) to be very very suspicious of people who are providing advice (via books, seminars, etc) AND who just also happen to be providing/selling/'putting you in touch with' (read getting commission) products that meet that advice.
I've done an evening seminar with JLF - he's impressive, his book is good. I'd be much more wary of buying his product. The evening seminar was followed up by some very smooth talking chappy who came along to my workplace & sat down & wanted to go over my financials... he had zilch experience, zilch IPs himself, and a practised script. And the approach made me feel they might be more than aware (like HK, and don't start me on that one!) of the psych. importance of getting someone to invest time in a potential deal, so it's harder for them to give up that investment and walk away. But I said no, thanks.
Despite this, sometime later I went back & got interested in his weekend seminar (OK, I'm a sucker for learning, but JLF impressed me with his outlook, & I thought there was something to learn), so I signed up for it. But I pulled out at the end of the first evening as it was so unfocussed and so vague and so full of mishymashy feelgood stuff (I have my own spiritual outlook, thanks, I didn't either need or want that one, let alone pay for the 'privilege'!!) and I decided it wasn't going to provide what I wanted. Did I have trouble getting my money back? You betcha I did - it took something like 4 phone calls and 5 faxes from of the increasingly louder 'please give me my money back like you promised' before I eventually extracted it. But do I know 2 other people who did do it and think they got a lot out of it? Yes. (But did they buy from him? No!)
My rule of thumb these days: Anyone who brings you a deal will be making money out of it first. People who save you time are making money (ie, you pay for the time saved).
Someone I know did buy a property of JLF's in Qld - sold it some years later when it was still negatively geared for about the same as they paid for it. Were they happy? No. Do they think it worked? No. Does JLF know how to make money? Absolutely.
Overall, I'd guess the answer to this overall is: maybe, maybe not. You pays your money and takes your choices. It'd be definitely cheaper to do your own research, and buy something yourself, mine tinkit.