Actually those are the 'minimum' requirements to have those holds removed.
There is no guarantee that once you meet those requirements the holds will actually be removed.
Also, they can always be placed back on an account for any reason they see fit.
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AGED SUPER HIGH LIMIT ACCOUNTS: 10,000/$1,000,000 and 25,000/$500,000
For new PP accounts it is 1000 euro in 10 transactions with no disputes and 60 days passed from the last (...or first... cant remember..) transaction. They used to advertise this for some time but now i do not see this in new accounts but works this way. Nothing to do with advertised 250 usd.
Actually those are the 'minimum' requirements to have those holds removed.
There is no guarantee that once you meet those requirements the holds will actually be removed.
Also, they can always be placed back on an account for any reason they see fit.