The price of weed is different from country to country and region to region depending on many factors such as if it is legal, what are the tax rates etc. In California, Colorado, Oregon and Washington, you can get an ounce of weed for anywhere between $200 to $250. The cost is higher in places where it is illegal to smoke weed recreationally - It is quite expensive in New York where an ounce of weed can go as high as $350-$400 while it is about $350 in Illinois, and about $300-$325 in Florida.