domain Sportsbook.promo value

.promo doesn't have any reported sales until now.
Moreover, sportbook.promo doesn't look like a decent name.
I'd say look into .COM and .ORG investment in the beginning instead of going for new gTLDs.
That way, it'd be more promising and chances of selling are more.
$0 for this one.

Thanks for the response. I think I might build sportsbook.promo into an affiliate site and see if it generates some traffic. A mini site will let me know if there is any value over the next year.
By the way, Sportsbook.com is worth millions and the newly legalized sports betting industry in the US is valued at over 100 billion.

It might not have value on the domain market but it has been a real money maker for my affiliate business.