I just happened to be walking past Dick Smith in SA when I saw staff putting up these signs.
Not sure if nationwide but most likely since they are shutting their doors soon. Yes, nationwide:
Apple products, including iPhone, iPad, Apple Watch: 5%
Apple cables: 30%
Game consoles and games: 20%
All TVs: 20%
Samsung phones, tablets and TVs: 20%
All Smartphones (Except iPhone): 20%
Laptops: 20%
Microsoft, including Surface products: 20%
Drones: 20%
DSLR cameras: 20%
Headphones, including Beats: 30%
Bose: 10% off (Selected stores)
See Discussion Here: Dick Smith Enters in Liquidation , Closure of Stores / Closing Down, Sales
I would run auction days instead, start with lower prices and attract more potential buyers to compete for higher price, many-in-1 card ;)