Does apple still sell it

I want to buy an iphone 4s white. I want to know if its still in stock in apple stores. Also the plan i can get and cost of it altogether.

Don't listen to that guy, go for the iPhone! Haha

Have a look at this link:
http://store.apple.com/...ct=IPHONE4

The apple store does still sell iPhone 4S's and they have available plans for them (for the US).
If you are not in the US, go to your telco's website and the will most likely have a page for iPhone's and all the available plans.

Of course, carriers and Apple still sell 4S and will for years.

Of course, they sell iPhone 4S in white but in 16GB only. You can also get the 32GB and 64GB version from outside Apple. Plan depends from carrier to carrier.