Yup. Though historically you can usually get some bang for your buck. Like MK / Injustice costumes being sold for 40+, Home preorder costumes were worth 60 at one point,
Cyber Ninja DLC was selling for $6 - $20 on ebay, even things like those tiny
Kyurem figures were / are selling for more than the game itself is actually worth. 
 
 
How many times has this actually rung true though? While you might save money on the MSRP, you can also lose money a number of different ways. 
 
Take the Kingdom Hearts 1.5 HD Remix LE, since this is the current topic. 
 
Option 1:
 
Preorder the game and get the Limited Edition and Dynamic Theme for $39.99. 
 
Option 2: 
 
Find a copy on release, possibly have to call several stores, get the game for the same $39.99.
 
Option 3:
 
Don't buy a copy of Kingdom Hearts 1.5 HD Remix (I assume many preorder because they love the games) and wait for the price to drop. This could be a week, a month, 2 months, 6 months, a year... it will drop 100%, but no clue as to when or how much. Unless this happens fast, then the number of Limited Editions in the wild will continue to dwindle and could result in you missing out. Even when it does in fact drop in price, there is no word as to where you can still find one, if they will match or have the deal and how much time you might need to spend doing this. So while you do in fact save X dollars waiting for it to drop in price, you lose Y dollars in resale / trade value, possible gas to find said item, the ability to get the sale price and ultimately getting one in good condition. 
 
Long story short... ignore the people that want to place a dollar sign on everything. Rarity has little to nothing to do with how valuable something is and the only real limit is what people are willing to pay. Don't believe me? Well people were still easily finding Black Ops 1 Pres editions for MSRP long after the release, yet the DLC was selling for roughly as much as the collectors edition alone. Yes! People were at one point paying $100 dollars for that stupid map pack, even though you can easily find that stuff long after release. Also not that it matters, but things can constantly and unexpectedly change.
 
Back before Dragon's Crown released I was saying the artbook would be common because every GameStop had 5+ (even with 1 preorder). The game came out and MANY Cag's did not get the art book at the time of their preorders at GameStop, no one seemed to get them from BestBuy (was that ever made good?), no one got them from NewEgg and Amazon was (maybe still is) the only one with stock after release. So while it might look common now... all it takes is the right events to happen for it to become valuable or "rare".