With stock, you can't.
So to answer your question, Yes, you need to care about the price of each unit. How much you get after one year depends on the dividend you get, and the unit price difference between the time you bought it and the current market price. Yes, the unit price would grow like the stock price. Yes, if you get dividends, the unit numbers is also growing.
So to answer your question, Yes, you need to care about the price of each unit. How much you get after one year depends on the dividend you get, and the unit price difference between the time you bought it and the current market price. Yes, the unit price would grow like the stock price. Yes, if you get dividends, the unit numbers is also growing.