Here, at PM, probably not. I'm not sure why not.
However, they are available.
Since Joshua Jay is affiliated directly with Vanishing Inc, the refills are available there.
I don't like to redirect you to another site, but since PM doesn't have them here, I'll post the link.
https://www.vanishingincmagic.com/magic/refills/inferno-refill/
I perform this trick fairly often and even though the gimmicks are well made, I purchased 5 refill packs.