I'm making a presumption here but if you meant 300mg, this is just under a third of a gram, 300mg should have a street value starting from £10 right up to £25 in some areas, 300mg is certainly enough for an active dose. More on effects and experiences of this dose can be found online.
300ng/ml is 300 micrograms per litre which is the same as 300ppb (parts per billion), or 0.3ppm (parts per million)
How many grams are there in a sixteenth of crack cocaine
Approximately 10 yrs . .
you must be on cocaine it you don't know how to spell cost
How much does 0.8 grams of cocaine cost
How much jail time for a kilo of cocaine in Maryland?
Cocaine is free for all gallaghers
The letal dose 50 for a mouse is 96 mg/kg.
An ounce (oz) of cocaine weighs approximately 28.35 grams.
Any amount will have you arrested. In the US, possession of any amount of cocaine is a felony.
it depends on how you inhale
In the UK about £40.