Can somebody give me a good idea of how much it would cost to create a dice game on my website?
I think it will cost above $10k to build a casino with inbuilt dice and many other games using third party casino software but this might not be enough to run your casino because you will require more than that amount as bankroll to payout users.
Its better to buy some running dice site or casino rather than going through all process of development, marketing and fixing bugs.