1 social area, 12 new missions, 1 raid, 4 strikes, 1 patrol, 6 PvP maps, 1 new subclass per class, 3 new guilds for $40(£40?)
Destiny looking like it's going to cost over $150 after everything.
Remember they have Destiny 2&3 planned and Taken King/Comet is only 1.5 with 2 DLC afterwards.
http://cdn.vrworld.com/wp-content/uploads/2015/01/Destiny-High-Res-Image.jpg