If you're referring to these:
Travel Deals from TripSmarter.Com

You would actually be buying gift certificates (or entry passes in the case of Gulf World, I think) at 25% or more off the face value.

A portion of our advertising contracts with some companies is paid in "trade" or gift certificates. We've ended up with WAAAYYY too much over the years and are offering it to our visitors at a good discount.

If you have more specific questions, email deals@tripsmarter.com and they can answer any questions you may have.

Good luck and welcome to Tripsmarter! Gulf World is great fun!