Disagree. I think that you would be surprised how many people pay full price for everything and how little resale price comes into the mind of most luxury consumers. I would venture to say that it doesn't figure at all. IIRC from my short days of actually covering retail and luxury goods, one of the first things you look at is full price sell through. A succesful shop, and in turn brand, depends on early sales, not discounters picking up the leftovers.
Personally, I pay full price for most things. I distrust Ebay and really dislike the feeding frenzy of big sales. If I see something on sale that I like, I snap it up. Years ago I would buy stuff on sale just because the price was good, but I never ended up using any of it.
It would be interesting to compare the satisfaction with full price versus sale price purchases over time. Also, my guess is that when I look at the WAYWN threads and see something that really fits awfully, I am looking at something that was a great deal.
This is an interesting debate. In general I have to agree with what Matt is saying. Most of the guys on this board, wealthy or no, are bargain hunters. That means they are not the target audience for luxury brands. Nothing wrong with that, it's just the way it is.
Another thing to remember is that buying at a discount means you are investing time to save money. If you want to dress really well at a significant discount, then you will have to invest a lot of time to save money. There are a ton of people out there for whom this is not a wise investment, they are much better off just paying the money. Now a lot of guys here are basically clothing hobbyists, which skews the picture somewhat. Still though, I often get the feeling that there are more than a few guys on this board trying to build a wardrobe that have pockets deep enough to pay retail or close to it more often, and they would be better dressed for it.
There is also a small and often overlooked consumer group that is very well represented here - that is guys who having already built solid wardrobes, use ebay, discounters etc. to supplement with brands they are already familiar with and love, at minimal cost. These guys are probably the smartest consumers of all, but to get there you are going to have to buy a lot of discount clothing for a lot of years (which is going to mean quite a bit of wasted money and unwearable clothing) or else spend time in high end retail stores.