Carl Lisciandrello WUSF State News Florida gas prices plateau to their highest level since early September Carl Lisciandrello WUSF Last week, the average price of a gallon of gas reached $3.58 before settling back by 2 cents. State News Gas prices across Florida set another record high, with $5 a gallon a real possibility Carl Lisciandrello WUSF Floridians are now paying 66% more than at this time last year.