This is primarily because of the greater distance from the island to the most popular dive sites, which means increased fuel costs and time spent on each trip for dive operators. (travelhappy.info)
Today's increased fuel costs continue to drive up the price of supermarket goods. (motherearthnews.com)
Turbo - charging was not preferred initially as the engines were perceived to be less reliable, however the method won a decisive victory by the mid-1970s as the 1973 oil crisis increased fuel costs. (en.wikipedia.org)