As just a domain name, I place a value of reg fee on it. Here's why:
- There are many available variations that might be better.
- The term Football Bet Mart is never used. There are no searches for it.
- The domain is longer than the recommended length.
- There are no advertisers buying ads for those words in that order.
- The domain was just registered 5 days ago
For these reasons I would say the domain name is only worth reg fee. Maybe 0. Maybe a loss if you renew it.
Now, if you develop it into a website that is generating revenue, then that's a completely different story.
Best of luck!