I wonder, does having a good name for a gambling business to be built have to spend a lot of money?
I think the name is not the main thing in building a gambling business, because when you have good functionality then whatever name you have in the gambling business will have a big impact too because you have good service and appearance and not because of a name. So, if you want to start to build a gambling business at least you don't need to think too much about the name first, because giving a name can be thought of at the end.
It's cost a lot, especially you bought a rare and good domain names, it could cost you minimum of 1 BTC or higher. The weird domain name with a number is very cheap since it's hard to remember and anyone would interested when they read the domain name. No one will want to play on such sites: 23bitc0ins, bestgamblersite1 etc. You need to have good of both name and the site functionality, rather than very good in the one side and sacrifice the other side.
Yes both are very important to a start up, because a good domain name truly translate into easy and high patronage since players will not fine it hard to remember the community who will find it attractive and there also the functionality, this both contribute to what makes a good and reputable casino.