The difference between video games and Lobster Vs. McDonalds is similarity. Most video games released today are not so different from the games released ten years ago. You'll see the same basic design concepts in every game released for the last ten years. So buying a game that's only three years old isn't a major step down from a game released today. Just look at the reviews released lately, Singularity is like Bioshock, Darksiders is like Zelda, Dante's Inferno is like God of War, Bayonetta is like Devil May Cry, etc.
To me, bargain bin games are the 1 dollar McDonald hamburgers of gaming. Either I've already played the games or they're the games no one would ever want to play anyway.
Or how about this - why watch Inception when you can probably rent Batman Begins, Prestige and the Dark Knight for the same price? You can watch three Nolan movies for the price of one.
Or why buy a 360 when you can buy a PS2 and probably 10-20 games for the same price? Why buy a new 50" TV when you can get several 20" TVs for the same price? Where do you draw the line on these kinds of comparisons?
If you are comparing a new game to another new game in terms of "price", then maybe I would accept that argument, even if I think arguing based on price is rather silly - Limbo is 1/4 the price of Singularity, so is Limbo 1/4 as "good" as Singularity? - at least that argument is more apples to apples.
I mean, I look for bargains just like everyone else who posts on CAG, but Wombat's price comparisons don't make any sense to me.