I have bought exactly the same one and it is in the glove box ‘just in case’ as so far not had the problem 🤞🏻. I think the price is about right as if it is a pressure sensor all that’s likely to be in there is a sprung loaded bit of material which reacts to the vacuum generated in the servo and relays an ‘on’ message to an ecu to confirm the servo is operating. If the ecu doesn’t get the signal then it compensates by operating the abs unit, which we all know know can’t take fairly continuous operation.
No idea how VAG justify their prices but the one I received has ‘made in Germany’ on it, so hopefully not been anywhere near China. Having said that, the Chinese are more than capable of producing very high quality parts if they want/need to and I am pretty sure all the German manufacturers have a fair smattering of Chinese parts made to their own exacting standards. ( Not sure what standards were being followed for these sensors though, pretty minimal ones I would hazard)