Grapeshot & I used these folks
http://www.canaanprinting.net/ several years ago when the 7th Day Adventist were in town.
IIRC VCDL sells GSL stickers for $0.15/sticker in rolls of 500 - when they have them.
I hve no idea what the current pricing is, but there is a request an estimate" form. Remember, round stickers on a roll are possibly the most expensive format, while square/rectangles on fan-fold are possibly the least expensive.
I know better than to ask what you are planning to do with a bunch of stickers. Probably safer to read about it in the paper.
stay safe.