with flattr, you can flattr, as described above. but note that after the first flattr click, you can click the button again to "subscribe" for 3, 6 or 12 months - or choose to donate an amount of your own choosing. you can have a look at tweed suit for example; https://flattr.com/thing/290032/Tweed-Suit-for-N900 wouldn't something like that work for you?