I mean if you haven't played these games yet, and you want to own them, it's definitely worth it, at that price I'd say. Rereleasing actually good games for new generations of kids to love is good, and these games are both fantastic.
Unless they're doing the stupid timed thing they did with 3D All-Stars, I might buy it second-hand later down the line if I have some mario coins to spare, but I'm definitely not hard-pressed to have these versions right away, but I borrowed a friend's 3D All-Stars and played Galaxy 1 on it, and I emulated them both like 2017 iirc, and played them both when they were new.