did they not charge the same amount for 3 halo 3 maps? and one wasn't much of a map, just a playground for that forge thing. i don't see what the fuss is about, if you are even thinking of buying them, and you said you are, i don't think you should be complaining. anyone who has the money for a 360, Live, and COD4 shouldn't have a problem paying for them. and if they do...then they won't get them. simple as that.
get used to it. DLC isn't going anywhere soon.