Because the stock market is not a store. The price of a share of stock does not include the cost of running the market and its infrastructure. If you want to i

Because the stock market is not a store. The price of a share of stock does not include the cost of running the market and its infrastructure. If you want to invest without fees, find a no-fee mutual fund with low minimum investments. At the scale where $7-10 fees are onerous, I find it highly unlikely you have the money or sophistication to be investing in individual volatile securities.