I first saw this ..artist? store? product?.. on Instagram. Because social media has replaced conversations and subsequently become the new "word of mouth." Which is to say, it hit my feed.
She's got a Store Envy site here. The prices are pretty reasonable, especially for custom art. A simple digital image is $5, a button or sticker of that image is $10 (total, not additional). Most of the pre-made stickers are $3-4.
I sent in a photo of Archie from one of our little shows and asked her to flip flop some of the colors around. Turn around wasn't super quick, a couple weeks and a reminder email, but she's young and the sole artist and was at least super professional.