yeah, the gauge cycles on start up, beeps, has a whizz-bang closing down 'ceremony' etc
I got them because they are made by a company that specialises in gauges - not a company that makes all sorts of shit, and does gauges on the side.
I've shopped around and they are by far the best quality on the market.
And yeah, expensive, but not as bad from within japan (cost me about 34,000 yen for the control unit, boost gauge and holder)