No biometrics fees for l2 ead category a18

Hi all,
Im on l2 and have applied for ead under a 18 category.
For a18 category, biometrics fees was not calculated on the uscis fee calculator.does that mean i dont have to give biometrics or do we have to pay the fee at the uscis office while we are called for biometrics?
Has anyone applied for l2 ead recently?