Kards Unlimited is a book nerd's heaven! They not only sell a ton of really cool and hilarious cards for any occasion, but they sell all kinds of knick-knacks like posters, toys, coffee mugs, beer glasses, t-shirts, (some of which may be appropriate or inappropriate) and SO MANY BOOKS. Since there are not many book stores or other gift shops like this around Shadyside, I often end up getting gifts and cards for friends, family, etc. from this place.
Since bookstores are not the cheapest place to purchase books or other souvenirs, you will end up spending a little more money than if you would order the same item on Amazon. However, you go to Kards Unlimited not for the prices but for the insanely cool and geeky atmosphere and to loose yourself in all the wonderful things in this shop!