I bought some of the Combat Colin Stickers myself so I could see what the quality was like. As you can see, the image and colours are sharp and they've turned out really well. Very pleased with them. This is the smallest size, so they're quite substantial.
If you're interested in ordering some, you'll find the link here:
Redbubble handle all orders and manufacture them, and ship them out to buyers. Usually takes about a week from my experience.