The Water Filters from left to right are:

Mini Ceramic ------ $80.00+S&H+Tax for CA Res.

Mini Carbon -------- $65.00+S&H+Tax for CA Res.

Combi -------------- $150.00+S&H+Tax for CA Res.

Pocket -------------- $240.00+S&H+Tax for CA Res.

                            Users

             National Geographic Society, Washington, DC

                   Agency for International Development

                      Drug Enforcement Administration

                        Federal Bureau of Investigation

                             International Red Cross

                               Africa Inland Mission

                                    United Nations

                                       Navy Seals

                             Swiss Tropical Institute

                           World Health Organization

                      U.S. Bureau of Land Management

                      National Institute of Hygiene, Lima

                U.S. National Park & U.S. Forest Service

       Armed Forces: USA, Switzerland, Germany, Portugal

Expedition Filter (not picture) ----- $1100.00+S&H+