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Costco in Potomac Mills (2700 Potomac Mills Cir)
Station Prices
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Regular
Premium
$3.43
Buddy_7yjq8ext$3.94
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My go to for diesel. Always the cheapest around. Met the owner one day and he was very pleasant. Staff is always extremely nice.
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There's never really a long wait(unlike Costco) and the station attendants are very friendly. The price is always lower, too.
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