An unlocked account is not assigned to a specific advertiser. This is sometimes referred to as an agency account, associated to an agency prefix. See Can I get an agency prefix? for more information on unlocked.
The cost for codes created with an unlocked account is $30 per code, except for Display Creative codes, which are $5 per code. Unlocked accounts do not qualify for the 12-month maximum of $25,000 and may exceed this amount depending on the number of codes created.
If an advertiser/client creates a large number of codes, it is often best to register a separate prefix and account for that advertiser so they can benefit from the standard rates. See our rate card for more details.