Increasing the prices

Thinking of increasing the price of the drinks that I sell at the shop. No, I am not doing it just because others are doing so. I am thinking of increasing the price because the cost has increased. Yes, the supplier has increased the price of the drinks by about 10% of the cost. And here I am, still selling the drinks at the same old price. That means my profit has gone down. If the supplier keeps on increasing the price, I would have no other choice but to increase the selling prices too. As much as I want to help my customers, I have no other choice but to do it. Business can sometimes be "cruel".