We have a vast library of thousands of fonts on our system. But you might want to check with us when submitting your order if your design uses a rare or obscure font. If it is not subject to any licensing then why not attach the font with your artwork and we will add it to our collection.
If you supply us with a particular font and point size we can replicate this. However, make sure that when you design your own badge it is created actual size (within our cut line templates); otherwise point sizes will be meaningless.