Dremels around here (battery powered) run from 10-50 bucks depending on speed . I would recommend a very sharp exacto knife to cut score it then snap make sure to watch fingers and score it very well or it will snap unevenly , if an exacto knife worries you lowes or Home Depot can cut it or have the cutting tools to do so it or take it to a glass cutting shop ours charges 3 bucks to cut upwards of 4 pieces from one sheet HTH