I got a Cabelas about 5 miles from my office that has them. Less than $10.00 for a pack of them. I find it cheaper to buy a Sharpie and make my own dots to shoot at. Of course you could also use a Magic Marker in a different color if you need to. Who cares if it is perfectly round?? I kill a lot of paper and paying for targets gets steap. I also resort to using empty beer cartens, cereal boxes, magazine covers, anything with a distinguishable spot to aim at and you can poke a hole in.
Welcome to the GTA!!