Wouldn't you like to know?
Each day the discount changes. But it changes randomly. So you have no way of knowing - neither do we!
That's the fun!
When you close your cart - before you confirm your order you will find out.
All I can say is the chance of a discount is on average
40% - once a fortnight
30% - once a fortnight
20% - once a week
10% - 2 to 3 times a week
5% - 2-3 times a week
It is NEVER less than 5%
If the discount is not enough - abort the order and try again the next day - it may be 40% tomorrow. But even without the discount our prices are pretty competitive.
For a full explanation of the random number computation please click here.