Try reading through his post history. You'll find out that, if he cannot match the price of the sales of items he is selling, with those who are selling the same things with him, he would come into that particular sales thread and either hijack or destroy it. To him, it is either his business, or kill the other businesses, my Tumpang thread included, even though the Tumpang is not a business-related matter of any kind, it just eats into his potential victims, who gets the chance of getting the items at a much more fair price, than his.