Currency, Money, Price
This is a dollar sign, which is composed of a letter "s" and one or two vertical lines. The emoji can be used not only to refer specifically to the currency unit on the price tag, but also to refer generally to the US dollar, the United States or some money-related contents, and even to imply other money-related topics, such as borrowing and debt.
Different platforms depict different emoticons. For example, the vertical line on some platforms will run through the letter "s" up and down and appear as "$"; There are also some platforms whose vertical lines do not pass through the letters, but only show a section above and below the letters. As for color, most platforms display the currency symbols as gray, green or black, and some platforms display brown or blue. It should be noted that LG platform not only displays the currency symbol itself, but also depicts a green background box.