1 - gives publishers a special discount to visitors at least 20% of the price of the book specified in the list of shipping has to increase in the proportion of the reduction.
2 - Currency approved for sale is the Saudi Riyal (equivalent to U.S. dollar 3.75 SAR).
3 - The Department controls the sale and discount prices, as listed in the guide to the exhibition and sent by publishers and matching through the sale at the exhibition.
4 - All parties involved develop a list price in previous versions. It will run the show by putting them in the online exhibition site.