I'd go with the slotted one (third link).
buying a chess demo board
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Why is shipping so expensive on every single online chess store?? 
Does anyone (in the US) know a (not online) store that sells chess equipment? I would rather not pay an exorbitant amount just for shipping.
Hello everyone. I am looking to get one of those chess demo board that I can hang on the wall. I browsed through Chess.com's online store, and have found 3 that matched my budget:
http://www.chess.com/eq/tournament%2Bsupplies/27quot-quality-chess-demo-board-with-clear-pieces-and-bag#
www.chess.com/eq/tournament%2Bsupplies/magnetic-chess-demo-board-with-red--black-pieces--bag#
http://www.chess.com/eq/tournament%2Bsupplies/basic-slotted-chess-demo-board-with-red--black-pieces--bag-color-of-bag-may-vary#
I'm not really looking to shell out 50 dollars for a demo board. But out of those 3 above, I am not sure which one would be the best buy.