Multiply or Add Puzzle

The Puzzle:

Multiply or Add

Guy goes into a store and buys 4 things. The cashier tells him his bill
comes to $7.11.

"Wait a minute," the guy says. "I saw you multiply the prices instead of
adding them."

"Doesn't matter," the cashier responds. "The sum is also $7.11."

What were the 4 prices?

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