Renting a utility trailer can cost $15-$45 or more a day, depending on size and capacity. U-Haul estimates costs of $15 a day for a low-sided (about 2' high) 4'x7' open trailer and $35 a day for a 6'x12'x5'5 ramp trailer, while Low Price Trailers of San Antonio charges $40 a day for a 6'x16' trailer with high wire mesh sides (about 3.5' tall).