Pricing with games is a pretty tricky subject, but there are two things my mind goes to immediately when I think about it: Quality and DLC.
Let's look at the Best-Selling Games for the current consoles:
PS3
Gran Turismo 5 (6.37 m) / GT5 Prologue (5.2 m)
CoD: Modern Warfare 2 (4.8 m)
Uncharted 2: Among Thieves (3.8 m)
MotorStorm (3.31 m)
Black Ops (3.269 m)
Metal Gear Solid 4 (3 m)
Xbox 360
Halo 3 (8.1 m)
CoD:: Modern Warfare 2 (7.481 m)
Gears of War (5 m)
Gears of War 2 (5 m)
Wii
Wii Sports (75.66 m)
Wii Play (27.38 m)
Mario Kart Wii (26.50 m)
Wii Sports Resort (26.35 m)
Wii Fit (22.61 m)
New Super Mario Bros. Wii (21.28 m)
Wii Fit Plus (17.74 million)[68]
Super Smash Bros. Brawl (9.48 m)
Super Mario Galaxy (8.84 m)
(Source: Wikipedia)
Though PS3 Users seem to actually have more diverse tastes than the 360 and Wii, which are dominated by shooters and "minigame" products respectively, variety isn't too big a problem as all many different genres of games can sell big. Racing, shooters, adventure, and minigames are all on the list. Looking beyond the consoles (or further down the lists) will bring you RPGS like WoW of Final Fantasy as well as Strategy games like StarCraft or Civ.
What do all these games have in common? They are all considered either high quality or at least well made. While Wii Sports Resort isn't on the same level as CoD, it does what it sets out to do fairly well. In addition to that, they appeal to a wide audience. An online component is helpful, but many of the games on the list are bought primarily for their Single Player appeal as well - MGS and Uncharted being key examples.
For nearly all these games that are considered of a higher quality, it can be generally understood that they had fans who were quite willing to pay the full $60 in most cases. Buying used is another topic I'll address shortly. For the games not "high quality" (i.e. those on the Wii's list) they had to rely on appealing to a wider audience. They obviously succeeded since they're sale numbers widely outpace those of their counterparts. One must take into account the slightly lower prices of Wii games as well as the special bundling deals of Wii Play and Wii Sports, but I still think the statistics back me up on this.
Either way, most gamers in my personal experience do not spend large amounts of money actually BUYING the majority of games they play outright at the MSRP. They will rent from Blockbuster or Gamefly, or buy used. I personally have a circle of two to three friends that I will trade games with regularly. My roommate bought New Vegas and I bought Mass Effect 2. They spend equal times in both of our PS3s. The point is that the mediocre games that are published year after year and seem to suck so much money from developers are either marketed towards kids who won't recognize or care about the quality (especially prevalent in games based on movies) or are simply money sinks that most won't care to buy anyway. The games most people buy new are the ones they know that they'll be playing repeatedly for a long time or can't wait another day to play. If not, renting or buying used is much more economical.
Gaming companies seem to have two real solutions to this problem that I can see from the admittedly limited time I've put to thinking on the problem: focus on making games with real quality that they know fans will want to buy new and encourage buying in that manner through use of DLC.
Bioware is an EXCELLENT example of this. Mass Effect 2 was a high quality game that many bought new, with week one sales moving 2 million copies. Oh, and those are the numbers for the PS3 port.
Source:
http://www.1up.com/news/mass-effect-2-week-sales
Not only were enough people excited enough to buy it new, Bioware also discouraged buying the game used by putting some elements of the game in DLC that came free with the new copies of the game. They did the same thing with Dragon Age when it first came out. Buy the game new and you'd get several quests as well as another party member. They plan on using the same method with Dragon Age 2.
While I have my own thoughts on Launch Day DLC being available, I don't have a problem with it being included for free with the new version of the game, it's a sound business tactic, and one I respect Bioware for using. It's potential for abuse worries for me, but for now I see it as an excellent example for how a developer should treat price. Bioware games may not come out too often, but when they do customers and critics have recognized them for their good quality and have been encouraged in a fair manner to buy them new and support the publisher. If other developers would focus on methods like these we'd hopefully have a less saturated market filled with higher quality games that we'd have no problem paying for.
I'm sure that this concept has quite a few holes in it that I welcome any subsequent posters to punch (if they have the patience to read all my ramblings) but I do think the idea has merit.