We need to calculate the price per board game
-Toy store
2 board gams for $13.68
In order to know the price per board game we need to divide the price between 2

The price for a board game is $6.84
- Online
4 board games for $26.84
In order to know the price per board game we need to divide the price between 4

The price for a board game is $6.71
ANSWER
As we can see the place that has the highest price for a board game is the toy store,