Rip off report-Careful

If you always look for the negative, you'll find it. You'll never get ripped off but you'll never do anything either.
If you're worried about buying something and it's not what you want, most, if not all, offer refunds. Just send it back. If there's a problem with getting your refund, as a last resort, do a chargeback with your credit card company.

Be careful of relying on rip off report as a completely unbiased source. Oh, and John Reed, too.
Here and other places there are lots of comments about the shortcomings of each. Nothing wrong with looking and weighing as part of the other viewpoint.
As far as the 2 gurus you mentioned, my personal experience with Russ Whitney is bad but there are people doing his thing quite successfully. It really pains me to even imply anything good about him, by the way.
Sheets' program ain't too bad. My suggestion is if you are slightly interested is to go to eBay. You can find his course being sold for under $100 regularly.
Now, it's time to get on my soapbox again.
Infomercials are marketing pieces. I love infomercials for the marketing examples and could be a junkie if I watched TV or had cable. They are there to sell something. There must be some truth to the claims or the FCC would shut them down. Someone is using their stuff and making money. If this is true, then, is it a scam?
What happens is people fall victim to the allure of "getting rich" Me, too.
There ain't no way to get rich quick without some work. Systems help, too.
What a lot of these things offer, really, is a system; a way to cut down the learning curve.
You get to learn from the mistakes they have made so you don't have to make the same ones.
I am a full time creative real estate investor and I actually got started from a Russ Whitney infomercial. I spent quite a few $thou and, for me at least, was on the wrong track. After wandering through the wilderness, I found the guru that worked for me, Ron LeGrand and have given him quite a lot of money. Made it all back in multiples. But I applied what he taught.
Let me be sure to point out that I'm NOT rich by a long shot. Some months I have to juggle to keep the lights on.
BUT, I am able to get by without having a job that I hate and my business keeps getting better as I apply more of what I learned and work at it.
Can you get rich? I don't know; others do.
Do something, take action. Taking action will get you further along than doing nothing.