Does it matter? It will be smart for people to buy to sell, if you can. If you can buy a second piece, keep one and reap the benefits of the after-market with the other, good for you. I've done that many times. Heck, I never opened the SS Ex. Bruce Lee by HT and as soon as it arrived, I shipped it right out and made close to a $300 profit on it.
Most of us love the collecting aspect of HT, but realize too that in these economic times, if you can swing an extra one to sell, or take advantage of the after-market, you'll do it.
Heck, as long as there are people out there willing to spend well above retail, you'll have people buying to sell, or buying extras to sell.
Oh, and it does not help that the prices are going up for HT. This is not a cheap hobby, and many times, collectors have to make tough decisions, sell many of their HT to fund other stuff they may want (i.e custom 1/6th scale pieces that are pricey, future HT releases that they deem more important et).
A figure you love initially, that may fetch a lot of money, but you just are not feelin' right now, or if you plan to pre-order or get many other things, may be the piece that gets you the moolah to get other things.
It's all part of the hobby...