Kiwi Stamps

I have just purchased a new box of 100 Kiwi self adhesive stamps. These have no stated monetry value other than the fact that one stamp equals the standard postage rate of the day which is currently 80 cents. The box of 100 stamps cost $80. I have just finished the .last of 5 boxes purchased at 70c per stamp but mainly used in the 80c postal era. I am very excited to have saved 10c or 12.5% per transaction and I am not even of Scottish descent.