Hi mate, i suggest paying the few BTC it will take and list on Bittrex if you have not done so already, also binance is worth looking at. These bigger exchanges will serve as a marketing tool just because they are bigger exchanges, ie: the bigger the exchange the more trust people have in PLU but also there people will know about PLU. If you keep listing on the lesser exchanges, you will be wasting time and money as it won't have the desired result of getting PLU known IMO.