Buy once instead of TextExpander
3 apps in the directory cover what people use TextExpander for. 2 of them are a one-time purchases, and one costs nothing at all.
TextExpander costs about $60 a year. At that rate Typinator, the cheapest dollar-priced replacement at $49.99, pays for itself in 10 months.
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
Alfred
keyboard launcher with clipboard history, snippets and workflows
£34 This version
Only the £59 Mega Supporter tier includes free upgrades forever; £34 buys Alfred 5
Typinator
mature text expander that still sells a one-time Basic licence
$49.99 This version
Basic buys Typinator 10 only; the next major version is a separate paid upgrade