They want $460 for a new one (made in China), but the loaner they sent feels really cheap. Has anyone tried the one from GadgetWorkz? I found it online at Amazon for $220. It looks just like an Essilor one so I'm wondering if it's a generic made at the same factory in China.

Also, can anyone repair my old one? A piece of metal that holds the headrest has come loose and rattles around inside, sometimes preventing me from moving the aligning thumb pieces. I know I'll have to buy a new one, but it would be nice to have my old one for back up.