How to get filesonic premium free or cheap filesonic premium?

If you want to buy an affordable filesonic voucher it is better to work with the directory official resellers:
http://www.filesonic.com/resellers/list

Among the cheaper:
http://accounts-premium.com/index.phpact=viewCat&catId=5/filesonic+premium

If you want to get totally free just look at use filesonic snacks or invest in livetime premium

By browsing their website and examining.