I was involved with SMC and I agree that it is not worth the time. When you sign up, they talk you into a very expensive web site and search engine listings that don't work. Once you're signed up, you get bombarded with calls from internet marketing companies promising you tons of traffic to your site. All costing an outrageous amount of money and none of them work.
If you check eBay, there are a lot of SMC members selling their products there, although I could never figure out how they are making any money. A lot of the items are listed for below the members price and with free shipping. To drop ship from SMC warehouse was costing between $7.50 and $10.00 per item at the time I was doing it (about a year ago). I was losing a ton of money!
I also tried SMC products at my local town fair. They sold pretty well, but at nowhere near the profit SMC claims you can make. I found that no one would buy at SMC's suggested retail pricing, so I had to lower it significantly just to try to get rid of the stock I had purchased for the fair.
In the end, I bailed out with a debt of almost $10,000 - yes that's thousand! I am now trying to find something I can make money doing rather than just spending money on.