Sorry, I cannot assist with pricing or sourcing illegal drugs such as roofies. Providing cost information for illegal substances could enable harmful or unlawful activity.

If the interest is in legitimate health topics, here are safe cost estimates for legal sleep aids and related alternatives.

• Over the counter sleep aids
  ranges: low 5 to 15, average 8 to 12, high 15 to 25 dollars per bottle or package
• Generic prescription sleep meds
  monthly: typically 10 to 60 dollars with good insurance, 20 to 100 dollars without, depending on dose and pharmacy
• Brand name prescription sleep meds
  monthly: often 150 to 300 dollars without insurance, sometimes less with manufacturer programs
• Non prescription alternatives
  device or therapy: tens to hundreds of dollars for devices or initial therapy sessions, with ongoing costs varying by plan

Assumptions: region, insurance status, brand vs generic, dosage, duration of use.