Just do what I did...make your own. I ran into this frustration. I worked with an artist who had the Mike Pike one and I don't mean to sound like I'm talking bad of him but it wobbled way too much to justify the cost (IME. IMHO). So I talked with a client of mine who welded...gave him some sketches...bought some vinyl off a web store and...BAM! I got my own custom arm rest made and it's HUGE so I have hand rest space for leaning on during the tattoo. Just my luck the welder client of mine knew a professional boat reupholstery guy who stiched and covered my arm rest for me.
image (1).jpg