At a pharmacy, buying Lorazepam may cost around $2 per 1mg tablet, but prices can vary. The street price is likely to be much higher. Don't buy Lorazepam. Generic lorazepam costs just $10 to $15 a month in some places, while brand-name Ativan can run to thousands. Why such a difference? To find the lowest Lorazepam prices, click below on the strength of interest. Choose Strength for: Lorazepam - Generic Version.