What is street value for yellow liquid promethazine?

The street value of yellow liquid promethazine can vary significantly based on location, demand, and whether it is mixed with other substances, such as codeine. Generally, it can range from $10 to $50 per ounce on the black market. However, it's important to note that using promethazine without a prescription is illegal and poses serious health risks. Always consult a healthcare professional for medical advice.