Yes, AMP for WP provides multiple membership plans. The Personal plan costs $149/year and allows access to all extensions and themes for 1 site. The Multiple plans give access to 3 sites and are for $199/year. The third plan, Webmaster, provides you the extensions and other access for 10 sites at $249/year. Select the Freelancer plan to get access to 25 sites at $299/year. The Agency plan, priced at $499/year, allows you to use all the themes and extensions for unlimited sites.