For the time being, they're going to be sold individually since I'm still working on ordering sticker sheets online. I found a website, and just ordered a sample pack on how their product quality is gonna be like.
They'll be sold for $2 each! I'll post photos later or link you to tumblr where everything's going to be explained n stuff. Once I get the sticker sheets, each sticker sheet will cost $7, so it's up to you whether to wait (in case you want to get them all for a cheaper price), or get them right away.
Once available, I'll also link you to my storenvy that'll be open for business once I got all material.