how much do these useually go for?

also while im shootin off questions on quotes, what would a cutie mark for say, a pinkie pie fursuit go for?

Right now I'm thinking $15 for a dice bag, and probably no embroidery design making fee if it's based off a pony from the show or a very simple design.

For a pinkie pie cutie mark I'll assume you want it as big as I can make it, which is a little over 5 inches for each balloon. I'd say $40 for a three patch set of one cutie mark. I should however warn you that thin sections such as the balloon strings don't do well as embroidery patches and will be weaker than other parts of the patch.