More of a warning. Don't spend you money on Privium. There could be good reasons to have good access to a lounge, I had once when the ash cloud gave a 6 hour delay. But 99% of the time when you need a lounge it is because you are abroad and are uncertain about the time it takes to get to the airport. Another reason to get the Privium is to get the Iris thing, but be aware that it is actually rarely needed in Schipol (not my favourite airport and after 2 years in Holland I could tell stories about the abusive behaviour of the border patrol) but the entry is actually fairly quick, as long as you are white and from northern Europe. To top the Privium experience off I have never been with a smile or any kind of attentive service, with the exception of the foreign bus boys cleaning. My final straw have been that when moved back to London and cancelled my subscription (paid for by work) they claimed the full amount because they only got the cancellation a month and a half before renewal - it should have been 8 weeks before, not 6. So they naturally sent it to incaso after having known about it for 6 months and failed to inform me that they wanted the money... lovely service isn't it?
So in short, ask yourself, do you really need the Iris thing to save 5 minutes of travel time? Do you really need a lounge? Do you really need to met by grunts and annoyance that you disturb the people paid by your money? and do you really need the aggravation of an inflexible company that will rather fight ex-customers than miss out on 1 payment?