Are there any real estate seminars out there that aren't a scam and are actually worth the money?
If you are referring to local REIA's (in general), you will get all sorts plugging their courses, and merchandise. It's unavoidable, as these groups rely on gurus, and marketers for money to keep the organization alive. Just need to bear with it, and keep an open mind to what some may offer. Of course, proceed with caution.
On the flip side... If you are referring to reliable coaching or mentor ship programs, join your local REIA and get to know some of the key players. Ask these players who the local reputable coaches are. Oftentimes, there are local coaches that are members of these REIA's, and may have a strong following. Also keep in mind that the best coaches are the one's who actively invest in your market.
Yes, they do exist. But you still must do your due diligence. The best place to start is with your local real estate investment club. Good luck!