$10k is a lot for software that operates with third-party providers, you don't offer the games or coin nodes, all comes from a provider, so, what we are paying for is the configuration, the server and the frontend, looks like that's all... not a good deal at all.
Anyone can get a VPS, a domain, then contact the game providers and start their casino with a low budget, if someone decides to pay those $10k, they are paying for their own ignorance.
Thanks for your reply, seo. When they mentioned they were effectively offering full access to the source code of the casino/service they were selling, I started to become more skeptical on the quality or the price tag this whole service was going to have for the common user (who has little or no knowledge on coding or setting a casino up). 10k dollar it is kind of cheap for a complete and functioning casino, in my opinion, so there must be something off going on which we are not being talked about this offer...
When I think of the cost of developing and casino from the ground up and having access to the full source code of it, the figure which comes to mind is not even close to that price you mention it.

Otherwise, there would be more casinos floating around on the internet.