Apple for years offered iPhoto, iMovie and GarageBand iOS apps as a $4.99 download each.
On the Mac, those apps which comprise the iLife suite come bundled with new Mac purchases and Apple's been very actively advertising them as one of the reasons people switch to the Mac.
As for the iWork productivity suite - comprised of the Pages word processor, Numbers spreadsheet maker and Keynote presentation creator - users are expected to pay $19.99 each on the Mac side and $9.99 each on the iPhone, iPod touch and iPad.
Some watchers think the advent of the free iWork for iCloud web apps with full editing capabilities (currently in beta) may signal Apple's intention to make the entire iWork suite a free affair, giving people one less reason to consider rival platforms. Today, a German blog has discovered an interesting change in the first-run App Store screen in the latest iOS 7 Beta 3 that surprisingly adds individual iWork/iLife apps as free downloads...