[Plugin: WordPress HTTPS (SSL)] multisite, sub domain and wildcard ssl

Hi,

I run a multi site with sub domains, where on the sub domains my customers are looking to do low value ecom. Do i need to purchase a wildcard ssl to cover all my sub domains, or can i use this plugin to cover my sub domains as well used on my multi site.

Thanks

Mark

http://wordpress.org/support/topic/plugin-wordpress-https-ssl-admin-css-mangled?replies=16

http://wordpress.org/extend/plugins/wordpress-https/