An advocacy group has developed a decision support tool to help consumers choose health insurance plans on public exchanges. The tool shows that out-of-pocket costs can vary by up to 600% depending on the metal level (bronze, silver, gold, platinum) of the chosen plan. By entering expected medical expenses and prescriptions, the tool calculates costs across different plan options and identifies the most cost effective choice. This is important because consumers often choose the lowest premium plan without considering other out-of-pocket costs, which can lead them to spend more over the course of the year.