Photography Pack is four plug-ins especially for photographers -- Aetherize, Mr. Contrast, Melancholytron, and Flood -- for a special price of US$74.
Space Bundle is SolarCell, LunarCell, and Glitterato for US$59.
Perception Pack is Hue and Cry, Melancholytron, and Flood for US$59.
Or buy some plug-ins individually. Prices appear on the order page.