If you need stickers done right, this is the place to go. This company did a great thing after I purchased my order:
I had ordered my stickers to be printed on clear polyester, not knowing that any light spots on my stickers would be clear. They emailed me to confirm that I actually wanted clear polyester, and let me know that it would compromise the look of my stickers. When I changed my mind, they changed the material to vinyl for me and refunded me the extra cost of polyester. Then, they allowed me to change my shipping address.

The only thing I didn't like was the fact that there was no option for regular cheap postal delivery. The only options were for the more expensive expedited delivery, and for pick up.