Not to sway you, the Steadyfast system is only $10 more than that and they make claims that they're better than the JT's style products because their is less slop between the 2 moving pieces (the tube and inner tube).
I've never used them, but their marketing material has given me reason to think of them.
Any aftermarket permanently installed stabilizer system is well worth it. They really do help eliminate interior movement. We don't use the ones mentioned above the system we use is still working great after over 7 years. Hugs, Di
2014 Ram Dually Pickup, Tailgate Easylift, Do More Slide Step & AMP side steps
1996/2010 Triple Slide Carriage, Mor/Ryde Suspension, Kodiak Disc Brakes, Big Foot Automatic Leveling System, TST Tire Pressure Monitoring System, Plug It Right Stabilizers.http://www.plugitright.com/5thwheelREDO.html