How much Etrade Marijuana Stock Trades Cost? Etrade charges $0 for cannabis stocks trades but $19.99 on mutual funds. In comparison, Firstrade charges $0 on marijuana stocks and all other stocks, ETF's and mutual funds trades. Buying Cannabis Stocks on Etrade Several exchanges are available at Etrade, including the OTC markets. Why won't E*trade, Etrade let me buy stocks? | Yahoo Answers Oct 12, 2007 · Why won't E*trade, Etrade let me buy stocks? Are you calculating up the amount of stock you can purchase correctly? Remember, at ETrade, you will be paying like, $15 per trade. So when calculating up how many shares you want to buy, you only can buy $185 worth of shares. By the way- you may want to consider if its really worthwhile to do this.