Making a casino list and make your own website is quite hard to give a lot of effort. You may also spend a small amount when having a domain name. How's the market affiliation and the cost of making your own site?
The affiliation market is quite competitive especially in the gambling industry as a whole, not specific on crypto. While for crypto there aren't so many as in the normal gambling there are slightly increasing day-by-day new affiliates.
The costs of creating a website aren't big, but what you need to consider is all the marketing you need to do... especially you should know that you cannot use some of the traditional marketing channels to promote gambling so you need to use SEO, forums or other channels.. but if you are not good at SEO you will have to learn and then it will require time before growing. Forum I think is one of the keys in the crypto gambling market, because there are a lot of people on forums and are really targeted. What I believe is that with crypto gamblers you should have a different approach because the market is different and people know more than the average gambler on the traditional casino.