My collection is based on value. That is, how much I enjoy the fragrance compared to how much it costs. Something like B*Men to me is of a low price to performance ratio. A bottle cost me less than $30 and it's one of my favorite scents. On the other end other end of the spectrum, my Amouage Tribute cost almost $300 and it's contents are a tenth (or less) of the B*Men bottle. But it's just such an incredible fragrance that it justified the purchase. I don't feel like plunking down another $300 for more bottles of Amouage because I don't enjoy any of them nearly as much as Tribute.
Honestly, as far as Serge Lutens, By Kilian and L'Artisan are concerned, despite their reputation on this board and the many samples I've tried, I just cannot justify the purchase of any of them. There's always something about them that makes me balk at their prices compared to their performance. Usually it's an off note that doesn't work for me or weak longevity, which is a major deciding factor for me. Fragrance is one of the few luxury items that I spend my hard-earned disposable income on. I want to get as much enjoyment out of that money as possible.
So no, as far as I'm concerned I don't buy based on the perceptions or supposed prestige. I buy what smells good to me as long as I feel that the price to performance value is there. It's like if I wanted a sports car would I buy a Porsche Boxster or a Subaru WRX? The choice would be simple for me because I based it on price to performance. The Subaru wins hands-down because after you compare the similar performance it falls back on the price of the two. You also have to take into account the upkeep of the Porsche when there is nobody in your area who can fix or maintain them.