Is there any way to purchase Fireworks without a Creative Cloud subscription?

I've been using it since 1999, but can't justify the cost of a subscription because it is only for personal use.

Actually, there is a single app subscription plan available , although I appreciate it may not make sense cost-wise for personal use. You can look for a second hand copy of Fireworks CS6 but need to very careful about the legitamacy when buying from 3rd parties.

No, not possible to purchase a license of Fireworks. You need to rent the entire CC suite.

Since Fireworks is dead software and no longer developed or supported by Adobe, single licenses or subs are no longer available.

The only other legal option left, aside from renting the entire CC suite, is to try purchase a copy on eBay, but you would have to be very VERY careful: often illegal versions are for sale on eBay.

Alternatively, depending on your needs, you could switch to an alternative.