Economics - Scarcity

Yes, it is scarce.
Firstly,more of the paper for recycling are preffered. The quantity of paper for recycling is not enough to satisfy all human wants. So, it is scarce . People are willing to pay a price in order to get the paper for recycling. In other words, paper for recycling is scarce.

2009-02-08 20:11:26 補充：
Although the paper are already used, they still deserve a price. People are willing to get some by paying money. Beside, these paper are made by scarce resource, trees. Therefore, opportunity cost is involved in producing it. Since more of them are prefered to some people, they are still scarce.