KINGSTON, Jamaica — Motorists should see a decrease at the pumps in the price of gasoline effective Thursday, June 28, according to the latest ex-refinery costs from Petrojam. 90-octane will be sold for $200.57 per litre after a decrease of $0.25, while 87-octane will be sold for $193.13, down $0.25. Automotive Diesel will be sold for $201.25 after a $10.50 reduction and ultra-low sulphur diesel will be sold for $ 217.53 per litre, down $3.06.