The price would depend on what city your in. Here they go for about $80, it's 3g of coke and depending on the habit and how its consumed it could last anywhere from an hour to a week.
Nah, you've changed my mind. It's more easier to sell baby aspirins as X to Rave kids than get my ass pounded by juiceheads.
BTW if you're really interested in seeing a true drug dealer's life, I'd suggest renting a flick called BLOW. Outstanding movie about the rise of a small kid from a middle-class family to drug lord status and then to the bottom of the scum. Based on a true story. Had the world right in his hands but greed and power can be deciving.
An 8 ball is 3.5 grams not counting the bag weight. The average price in the states is probably around $150-175, but it's all about supply and demand.
The official toxicity level for humans, is between one and one and a half grams of cocaine, depending on body weight. I was averaging 5 grams a day, maybe more. I snorted 10 grams in 10 minutes once. I guess I had a high tolerance.
If your 8 balls are 3.5 then you got some cut in there. In Latin America (where cocaine comes from) an ounce weighs 24g not 28g like America. An 8 ball is an 1/8 of an ounce (thats how they got the name). 24 divided by 8 equals 3.