Is including one of these with every ballot really cheaper than a sticker?
Ok this is more disappointing than infuriating, but I've been voting for 26 years and just once I want the state or county to give me a frickin' sticker.
Probably, yes? Printed paper is quite cheap, compared to sticker material. Negligible as the per-square-meter cost of both is, and how many more stickers you get out of one.
I'm not eligible to vote in your country. In mine, voting is mandatory and there are no stickers, just democracy sausages to aid in the funding for local polling places like schools and community halls.