The magnetotransport properties of the iron-based ladder compounds BaFe2S3 and BaFe2Se3 under various pressures were investigated. BaFe2S3 had a T^2 dependence in electrical resistivity and a normal magnetoresistance near an insulator-metal transition. Therefore, it had Fermi-liquid-like properties in the normal phase. However, BaFe2Se3 had a T^3/2 dependence in electrical resistivity and a negative magnetoresistance. This suggested that BaFe2Se3 had non-Fermi-liquid properties near the insulator-metal transition. For both materials, the Hall resistivities indicated a hole-dominant magnetic field dependence. During a pressure-induced insulator-metal transition, BaFe2Se3 had a rapid decrease in electrical resistivity above 15 GPa attributed to an isomorphic structural transition previously reported in X-ray diffraction experiments. This transition had a strong impact on the electronic properties.