I guess the thing that could become bothersome about this, as others have said, is that if over time the figures become worth less on the secondary market. I'll admit that much of my Sideshow collection has been purchased off eBay, and I usually pay 50% or less of the retail price. I have now changed my ways and started pre-ordering the crap out of the exclusive SW figures.
But if after a while it seems like I could even get the exclusives for a cheaper price I'll probably abandon the pre-ordering. So for me I really only value having the figure, but I want to buy it as cheaply as possible. However, I still think this is pretty unlikely to happen... it seems no matter how crappy or giant the edition size people will always pay a premium for SW merchandise, especially if its "exclusive", or in this case "inclusive".