If it costs 100 BTC to build, and maintain a gambling website , especially one like prime dice, it should alarm you on how the owner of the website is prepared to get his investment back as quickly as possible. No wonder its a few people who can really make profit on dice games, the house edge is so big more than what many think.
With this amount of bitcoin you can already create maybe 2-3 games with your gambling site. And you will save a lot of bitcoins if you are already a programmer for the labor of programming the script of your site will be just for free for you are the one to do it. But if not, then that will also cost some of your capital bitcoins.