The Transactions on Networking, or ToN, is changing its policy somewhat on papers. Before, it used to be the page limit was nominally 12 pages, but you could pay $200 per extra page for up to 2 extra pages. Now, the page limit will nominally be 10 pages, and you can pay $220 per extra page up to 4 extra pages.
As I've mentioned before with Transactions on Information Theory (which is, I know, already changing its policy on correspondences), I don't understand page limits for journal articles. An article should take the space it needs for the authors to adequately express their ideas. Admittedly, for ToN, this is less of a problem than for ToIT; 14 pages is generally enough for most any networking paper. I suppose the page limit helps prevent papers with a seemingly endless series of graphs each presenting minimal information. (There are still plenty of networking papers like that, but page limits at least cut down the number of graphs that can appear.) Still, there must be some high-quality papers that authors either send elsewhere or artificially cut down to the page limit.
This change in policy, though, seems just to be a way for them to pull in some extra money. I know IEEE and its societies have had money problems in the past; maybe it's getting worse.
ToN is a high-quality journal, and has been a good outlet for some of my work. I haven't minded paying $400 in the past for the two extra pages when needed. At some point, though, there's a limit. Time for me to look closer at how Open Access journals like Theory of Computing are faring monetarily these days -- is there a networking equivalent yet?