It has become increasingly expensive to collect or mail some of the more popular stamp series from the UNPA.
For example, the very popular Endangered Species series, in the past they issued 4 stamps in a set each with domestic postage rate, now each stamp is international rate.
So the total cost of the set is about 3x more expensive and this makes it very difficult to put a whole set of stamps on 1 envelope.
I can only buy less of them now ever since UNPA changed the rates on these stamps, because it takes away the fun of sending these beautiful stamps to my friends around the world.
2019 Cost = $4.60
2008 Cost = $1.64
