65 BTC is a pretty high cost for just a site that has these games.
Is the site a famous one ? Link to the website ?
If the games were bought from a gaming company, then it usually takes less than 5 BTC to get a gaming platform with 400+ games.
What is the advantage of purchasing from you ? (Don't take my questions in an offensive way, but it isn't hard to set up a casino website, for 1/10th of the cost).
Unless your website is famous one, and has a good revenue generated, the price is simply too high.