IMO they are scam, after Jagex stepped up their locking game I was in search for proxies that would never get locked. Been using 1 USD proxies and after their change they were getting locks a lot, bought some 15 USD residential proxies which had completely same results. Then found cheap 2 USD proxies which perform very well for me, no locks etc. So be caucious with proxies since you get be spending a lot of money for something that is not worth it at all