We are dying to know the actual site name. My guess is, sales are going down and it may even stop working within 3 months.
This assumption is just ignorance to the business world. Just because someone is selling a business does not mean it is tanking.
Unless the internet dies, this will continue to generate $2000+/profit, minimum, which is a conservative number.
Last month I made $3650+ profit from just PayPal transactions.

Alternative payment methods generate me anywhere from $500-$1000+/month. Unfortunately I have had almost no sales for Bitcoin transactions.
In peak months I made a ton more, so in certain cases you are right, but in some you are not. I simply lost a lot of desire to promote and advertise this specific project.