Gasoline Prices In The Tri Cities Has Jumped After Crude Oil Started Trading Above The 75 Dollar Mark. AAA Fuel Gauge Report Numbers Showed The Average Retail Price For Unleaded In Kingsport And Bristol Were At 2.28 Cents Per Gallon, An Increase Of Nearly Five Cents While Prices In Johnson City Rose Only 9 Tenths Of A Cent. However, A Ten Cent Jump Occurred In Kingsport On Friday As Prices Rose To And Average Of 2.38 Cents Per Gallon. Aaa Spokeswoman Stephanie Milani Says The Optimistic Tempo With The Economy Has Led Gasoline Export Traders To Force The Price Of Crude Oil Up On Wall Street.