Measurement of lower-concentration metabolites at ≤3T using edited MRS requires relatively long scan times (~10 min for a 27-mL voxel). We investigated whether scan times can be halved to ~5 min without a significant increase in group-level variance. GABA-edited MEGA-PRESS data from the Big GABA repository were analyzed by quantifying GABA+/Cr levels for complete datasets (320 averages; ~10 min) versus the first half of each (160 averages; ~5 min). There were no significant differences in group-level variance or GABA+/Cr levels. It appears that for a large, high-SNR voxel, GABA editing scan times of ~5 min are feasible.