Not much help here but...
They float through eBay occasionally, but none right now or you might try to PM some LP101s who have gone through the Penn Foster course and see if they would sell theirs.
I saw a guy selling the 35mm padlocks at NZ$7.50. I could show you where to contact him. The only problem will be shipping costs of at least $9.50 and i don't know how you'll get the money over as he probably won't accept paypal. Depends on how badly you want it.