Blue ox sway pro, cheapest place to buy?

My nephew just sent his back. He thought he had thew world by the balls when he ordered it. He did nothing but complain all last summer about it trying to figure out why his trailer would sway all over the place. He even went as far as adding air bags to his truck. I told him there was no way his trailer could be swaying like that with his setup until I rode with him and felt it for myself. He has a 2015 34 foot Hemisphere light model of some sort, and a 2012 F250 powerstroke. I cant recall what he is getting to replace it but he sounded pretty happy to be rid of the blue ox.