if I pay for access to wp themes for a year, can I download and do I renew?

i recently discovered that i can pay $120 to wordpress for access to their premium themes for a year. as opposed to buying one theme at a time which is very expensive. What i want to be certain of is, if i pay that amount, can i download the themes for use on my other websites or am i restricted to using it just for the site i bought the access from. If i can download to use on any site i am working on it will be reasonable, if not then there is no point paying for that access. Also will the themes be renewable every year, will it render usage obsolete on the website after a year or will i simply just need to resubscribe, please anyone with information on how it works, please share.