The information OP provided here are the same information from the site you also provided that means the op is marketing the site for the broker. And for the price or amount placed by the OP which $1.5m to sell the casino site is not too expenses because if the buyer is a genuine person and he handles the casino company very well with his customers, he can gain his money back within the 15 years stipulated time. But what I will consider is that after the purchase of the site, the new owner of the site will still spend enough to set up the site therefore, the seller should also consider those expenses and reduce the price.
We don't mean the price is too much but what we mean is that the developer of the site might have some buds which might make the new owner to be very careful so that the risk will be limited. Buying this at that amount is not bad but there must be assurance that the safety in this. The price is less and looks okay for buyers to everyone that is interested needs to be prepared to make changes.