with [kanarazushimo] A ga kanarazushimo B yori (adjective) tohakagiranai 高い物が[必ずしも]安いものより良いとは限らない。 Expensive things are not always better than cheap things.
お金持ちが必ずしも幸せとは限らない。
also with a verb
お金が幸福をもたらすとは限らない。 Money does not always bring happiness.
いつでも自分の思い通りにできるとは限らないよ。 You cannot always have your own way.
dc
高い物_が_ is more natural in context.
Miki
Lit : Not limited to being [...]
Amatuka
Is this like ...というわけではない [wakedehanai]?
yookoso
Yes. とは限らない can be reaplced by (という)わけではない.
Miki
Frequently appears with 必ずしも.
(Question: Could this be applied to nouns in this way: (これは鉛筆として使うとは限らない、マーカーとしても使えますよ。)? It isn't limited to the function of a pencil, it can also (perform the function of) a marker. Something that isn't limited to one single use or function.)
LittleFish
It's grammatically correct. 鉛筆 used also as マーカー…. If you mean a mechanical pencil, it should be シャーペン.
Miki
ex #3836 - おいしそうに見える食べ物 could simply be おいしそうな食べ物?