how long is bastion

as long as you want

Took me about 8 hours to complete once.

5 hours if you rush, closer to 10 if you stop to do everything.

8 hours

I've played about 5 hours and i'm still playing.

First playthrough I'd say 7-10 hours if you take your time. After that it depends on how you decide to play it (using idols or not, doing the challenges or not, etc)

Took me 6 hours to complete the story, but i'm planning to play it again!

6-7 hours, but there is replay value.
I played it 3 times through to get 100%, took me about 17-18 hours. Played it then again just because it was so much fun.

It's a must buy in my opinion.

It took me 5 hours to finish it. You should just go and buy it because it's a nice game. And it has an awesome soundtrack

7 letters

27 hours for me and I didn't finish the second playthrough yet. But then again I like to explore every nook and cranny...

About 6 hours