jamesbuc: Then go buy it. Seriously. If you want to pay more then pay more but $1 for Redshirt. Complaining why?
Well, there are valid arguments against buying bundles for just one game (exception: Humble Bundle, for reasons I'll explain momentarily), namely that what you're paying is being spread evenly across all the developers. And in many cases, you are indirecly supporting games that really should not be supported.
For example, Be Mine 4 had Laxius Force, which I was interested in, but it also had Revelations 2012, whose appalling reputation should really precede it. The presence of that game alone compelled me to avoid the bundle like the plague, as I could not find any moral justification to contribute to that developer's success. Likewise, some people make take issue with buying bundles for which they already have the majority of the games, because those developers are essentially receiving more money undeservedly - not necessarily a bad thing, you may say, but this money is coming at the expense of the dev of the game you don't own.
Humble Bundle is an exception in that it is possible to change what developer receives how much. Therefore, if you already have a game or have moral reasons for not supporting a particular developer, you have that option.