Evernote's various software clients are free, and premium accounts (allowing for any filetype and much more storage) are available for $5/month or $45/year. Curio is more pricey; the standard version is $99, and the pro version is $149 (there are significant academic discounts available). If you're already a Curio user but not an Evernote user, I'd recommend you sign up for a free Evernote account and start enjoying the benefits of the integration. You can always upgrade to a premium account if you find it indispensable (a fairly common occurrence). If you're an Evernote user considering Curio, use the coupon code EVERNOTE at Zengobi's online store (or Academic Store) to get a 20% discount on a Curio purchase. If you use neither, and don't want to, shouldn't you have given up reading this about a paragraph ago? Nah, thanks for sticking around.