I tried to purchase the year long tantra membership and relieved this message from pay pal when I clicked your link:
"This recipient does not accept payments denominated in USD. Please contact the seller and ask him to update his payment receiving preferences to accept this currency."
...mmmmm, maybe it did work, can you check? I think my sign in name was ianalexander
It is an error. I send invoices to people who fill out the registration form.