weed though a not legal business in many states but it has got the legacy in several states also .starting a weed business is a very much profitable business. To start a weed business you have to collect a license from your nearby authority. If you ask me about this i will ask you about your plan and strategies, when you have taken a decision of making it , you must have some plan. cost of starting a weed business depends on place where to open it and your plan . You may start a dispensary with 1000$ or it may rise to 20000$. Cost mostly depends on place , selling strategy and supply facilities . so if you are thinking of starting a weed business, just sit for a while and look to your plan.