The cost of the full version of Accent PDF Password Recovery depends on the features included:

Home Business
Adobe PDF 1.1 - 1.3 (Acrobat 2-4) CPU only CPU only
Adobe PDF 1.4 - 1.6 (Acrobat 5-7) CPU only CPU only
Adobe PDF 1.7 EL3, EL5, EL8 (Acrobat 8-DC) CPU only CPU only
Cost Price Price

An Accent PDF Password Recovery license gives the user:

Secure online payment. We accept credit cards via our secure online form, as well as by fax or phone. We also accept checks, PayPal, wire transfers and corporate purchase orders.