Buy once instead of Text Blaze
2 apps in the directory cover what people use Text Blaze for. 1 of them is a one-time purchase, and one costs nothing at all.
Read the catch on each one before you switch — a one-time price is not automatically the better deal, and we say so where it is not.
The replacements
Espanso
offline text expander whose snippets are plain YAML files
Free Open source
snippets are YAML files you edit by hand, and syncing them between Macs is your job
Keyboard Maestro
the heavyweight Mac macro engine, bought outright once
$36 Paid upgrades
major versions are a paid upgrade, currently $25, and arrive roughly every couple of years