On sale, a pint of strawberries costs 216 / 54 = $<<216/54=4>>4.
The supermarket would have made 216 + 108 = $<<216+108=324>>324 if the strawberries were not on sale.
Thus, a pint of strawberries not on sale costs 324 / 54 = $<<324/54=6>>6.
Hence, a pint of strawberries costs 6 - 4 = $<<6-4=2>>2 more when not on sale.
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