Since we already have two newer models, refurbished is probably the only good price for an iPad 4, which is a very capable rig vs its predecessors.
Look on the Apple.com site and search for 'refurbished ipad'. Sometimes you can grab an iPad 4/16GB for $239 + free shipping. YMMV. Don't buy refurbs anywhere else since there won't be the same quality control or warranty included.
Who can advice me as for ipad 4? Is it worth buying? What is good in it? I am interested in gaming, internet using and watching movies. Is it ok? I have now an ipad of first generation what makes ipad 4 better?

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