[@Oak7ree] Donald...Duck?  Okay now I'm /scared/.  But no, usually grocery stores are food.  Sometimes general supplies, like general household items.  Some toiletries.  A supermarket or a store like Walmart might have books and comics, and also electronics and appliances and clothes and bedding.  But your best bet for comics are as follows: book stores, geek stores, and of course comic shops (because...well dur).