Help with the stairgate!

[nikky0907]

So,I like to plan ahead,that's why I'm posting this thread...

My apartmant basicly has two floors and the baby's nursery will be on the second.
Now,I know that I have to buy the stairgate when the baby starts crawling and walking but can someone please tell me where?!

I looked at the local baby store and they said that they don't sell it so I don't know in which stores to look...

And could you please recommend me one?
Thank you...