Not in stores. Try Amazon or other online places where you can buy that sort of merchandise.
Ebay.
Walmart
Amazon or eBay
I Buy them at amazon.com they're pretty cheap just search teen titans action figures and the name of the character you wish to buy
There is no data on where one can buy Amy Wrigglesworth from as of January 2014.
you can buy cheap water at varartas
This is a well known group online for playsets, hopefully its something to look at for yourself. http://www.fao.com/home/index.jsp
you can buy a cheap one at gamestop
To buy cheap batteries you should go online to eBay or to Costco. Costco you can buy enormous value packs of hundreds of batteries for cheap. EBay you can buy them from an auction for cheap.
No there is not a biography for Amy lee
You can buy the dragon MSUV on the cheap at ebay.
where can you buy cheap textbooks for high school