Learn Swedish: Boken är värd varje krona. - The book is worth every krona.

The word for "worth" is an adjective in Swedish, so it must agree with the noun it describes. Because boken (the book) is an en-word, we use the en-form värd. You probably hear värt a lot in the common phrase det är värt det (it is worth it), where the pronoun det (an ett-word) forces the ett-form.

Doesn't värd also mean "host"?

Yes! The noun en värd means a host (like at a party or a TV show). However, in this sentence, värd is an adjective meaning "worth." You can tell it is an adjective here because it comes right after the verb är to describe the subject.

Why is varje followed by the singular krona instead of the plural kronor?

The word varje means "every" or "each," and just like in English, it is always followed by an indefinite noun in its singular form. You say varje krona, just like you would say "every krona" and never "every kronor."

Can I use värd for things other than money, like saying something is "worth the time"?

Absolutely. Just like in English, you can use it for monetary value or abstract value. For example, you can say filmen är värd att se (the movie is worth seeing) or det är värt tiden (it is worth the time).