There are many companies claiming to have been promoted on Shark Tank which is a total scam. Even the Shark Tank judges themselves have come out and said this is a big hoax. See tweet from mark Cuban.

The best steps you can take to avoid getting caught in a scam, and buying high quality products that work are:
- Check where the product is made. Made in Australia is usually recommended.
- Is there a Paypal option for payment?
- No crazy fake testimonials with before and after photos, 99% of these have been photoshopped.
- Listed ingredients of what's actually in the product.
- Offering an Australia Post shipping option. So you know it's not coming from Alibaba or some unknown warehouse.