It would be great if there was the possibility to purchase 1 or 2 extra mounting brackets at a reasonable price. I am currently doing development on a couple of systems and switch the REX device between them. I also have an additional system it would be helpful to use the eye tracker on every once in a while (having a spare mounting bracket for future needs would also be a good thing). I was considering purchasing a second REX device (to use until the EyeX is shipped), but don’t really need 3 eye tracking devices long term.