You could buy it online.
here to buy yugioh duel disk
Yes, you can buy a duel disk at walmart.
no where
how much is this duel disc
You can't you cannot buy them from shops anymore unless you get from eBay or amazon or some sort of online shop
eBay or toys r us.
go shop buy go shop buy
its not there in riyadh
Toys R Us and Argos.
internet and retailer shops
Argos and Toys R Us.
at toys r us