Export
Cards, graded slabs and sealed, with today's values, in the format you need.
Formats
An Excel file for your own sums, text to paste elsewhere, or a full backup to import again later.

The other way round
A collection kept in a file can be imported so you don't have to rescan everything.
No: it's part of the paid Pro subscription (€4.99 a month or €29.99 a year). The 14-day trial doesn't include it.
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