Damien Courvalin, head of energy research at Goldman Sachs Group, said gasoline and crude oil prices are expected to rebound by the end of the year because the market still needs to strike a balance between rising demand and tight supply. Brent crude futures could reach as high as $130 a barrel, while U. S. gasoline retail prices will return to about $5 a gallon. Prices need to remain at the above level in order to finally solve the problem of market gap.