I've found <$10 mechanical gauges are typically inaccurate, or become so in short order. <$15 electronic gauges are typically very accurate but have awful durability.
Nicer mechanical gauges may last a lifetime for personal use, but remain consistent <5yrs used professionally. I've had a
https://www.matcotools.com/catalog/p...RESSURE-GAUGE/ for about 10yrs, and it still agrees with most tpms within 1psi and is perfectly consistent retesting the same tire, batteries last a lot longer than I expected ~3yrs.