Hey Paras!
At Knup Solutions we work exclusively with the "bet" domains that you're mentioning.
When buying bet keyword domains with the .com extension it's important that the domain has the word "bet" or "betting" either at the beginning or the end of the domain name. Any state, city, country, or area and the word "bet" or "betting" constitute what our company calls a "premium domain". This is because it the entire domain is essentially made up of keywords. Also the value of these domains skyrocket when betting becomes legal/already is legal in these states, cities, countries, or areas.
Just out of curiosity, in what capacity do you work with betting domains?
I hope this answers your question pretty well, feel free to shoot me a message if you have any other questions.