Cheap targets...
For practice purposes, I go to
www.Targetz.com and download whichever one I like. (Currently, the 3" black bullseye is my favorite, for practicing bullseye pistol.)
You print ONE of these on your computer printer--it takes quite a bit of ink. Then you wait until your local Office Max, Office Depot, Kwik Kopy or equivalent has a sale on copies; take the target in and have 'em do up 300 or 500 or 1k or whatever number you need.
If you want you can have 'em printed on heavier paper than "regular" copy paper; makes scoring easier and they're more durable in wet weather outdoors.
The Targetz targets say right on 'em: "Please feel free to share copies--no unauthorized modifications." so I copy 'em like crazy and don't modify 'em.
Thank You, Targetz!