Wow, folks at times here have stated they had difficulty getting off the pulley (after removing the bolt, like you), but I have not seen a report of it breaking when using a puller.
I'd say anytime one of these crank pulleys seems highly resistant, try to soak the mating surfaces with the penetrating oil PB Blaster. Tap a bit with a mallet all around the mating surfaces. Wait 20 minutes. Try to tap it off next with the mallet. Then go to the puller. Mine has always come off with tapping or, worst case I think once I put a cheap-o puller on it, and it came off very easily.
Junkyards are an excellent place to buy a new pulley. I broke my 91 Civic's a few years ago with a poorly designed crankshaft pulley bolt tool (since modified). I bought a new one online through a junkyard for $40. Now I know my local junkyards sell them for much less.
Take the old pulley with you, if possible. There's a fair amount of variation from one year and model to the next.