Compared to 3 or 4 years ago, content & bandwidth are cheap. I look at it this way: bandwidth is a given - I've got 3 servers & pay X amount for them with bandwidth, so for me anyway, the more sites & galeries I make, the better off I am
Content is also a given, but I have so damn much of it from past projects that I could probably build sites & galleries using it for the next 3 years & not have to duplicate myself - LOL - but like I said, content is cheaper these days & you can use it more than once (just not in a small time frame - LOL)