Of course, most Americans are on a budget, but when it comes to their subscription services, like Netflix, Spotify and Amazon Prime, many people have no idea how much they pay.

The vast majority, 84 percent, of consumers in a survey underestimated what they shell out on those monthly expenses, also including dating apps, cable television and Wi-Fi, according to a recent report by the Waterstone Management Group, a Chicago-based consulting firm.

On average, consumers spend more than twice as much as they think they do: They estimated they cough up $111 a month on such services when they actually average $237, Waterstone found in its survey of 2,500 people in May.

And regardless of the price tag, consumers were “happily hooked” on many of their subscriptions, particularly Amazon Prime (which recently raised the price to $119 a year), cable TV and music streaming services, such as Spotify, the report said.