So let's say that our company buys your site on August 1st, one of your clients from July 1st Sue's, you do have coverage insurance for that liability all the way back and all the way up to the point of sales that correct? I think there is a lot of ambiguity here and the negative trust with your account make the situation even more worse to be trusted. 
Well this is crypto and gambling. So I am pretty sure the same rules don't apply like they do to American corporations and businesses.
Most likely unlike a corporation or business, they do NOT have any type of insurance what-so-ever. IF they did they would use it to pay the small 0.013 BTC that they are accused or not delivering.
Either way its risky buying the business because what-if the 0.013 BTC is not the only liability that you must cover as the new owner? Someone can easily say they are owed 10 BTC, right after you claim ownership of the business and you will be held liable for it.
The site can simply hit it from their logs and book until after the sale.
Hence very risky buying into this website.