I guess this machine is not cheap... and it needs a lot of yarn in many colors, too. I have seen ashop like that, who was specialised in badges mainly. I bought a full set of Stargate SG1 badges there for a uniform for cosplay. They had all sorts of badges, from movies and TV series. And they also made badges from customer designs, like for clubs and so on. Badges like these:

were 10 or 12 bucks a piece.