A restaurant has a nice buffet for about $40 per person. The price has been the same for several years. The price recently increased by 10%. Assuming the cause was inflation, we never thought to ask about the increase.
It turns out that the increase now covers the price of non-alcoholic drinks (which must be ordered from the server). The previous price did not cover drinks. However, nowhere on the website or menu is it mentioned that drinks are now included etc. The only way a returning customer would find out about this change is if they ordered a non-alcoholic drink and found it not included on the bill, or if they happened to overhear a newcomer sitting nearby who asks the server.
Does this seem sketchy to you ?