The "free extended "holiday offer is for all customers who registrate their bundles between now and Jannuary 6th.
You find more infos here:
http://vsl.co.at/en/65/71/773/502.vsl
A discount calculator is not necessary.
You will see your personal VIP prices on each product page in the "Your Price" columne.
If you are logged in and you have registered all your products you will see your discount there.
All our authorised dealers in UK do have access to your registration account and should be able to support you with any pricing questions.
best
Herb