For those of you near a Target Store in the USA these are now available again but are now located back with the stocking stuffers in the Christmas Candy section. The location near me has them for $3.49 (last time I had seen any around here they were $3.99, so bonus!). Since it's been 6 months since I've seen any of these near me I was quite happy to add to my supply of them.
For those of you that need a link to a listing, here ya go: http://brickset.com/detail/?Set=30062-1
30062 Target Practice Poly Available
30062 Target Practice Poly Available
Build? I merely Acquire atm.