For non-machinist uses such as electronics [measuring pads, component sizes, holes, cases, etc.,] most cheapo brand-x calipers work very well. You can always test your purchase with a set of known standards. Avoid plastic calipers for better accuracy prefer steel or aluminum or at worst, carbon fiber to minimize shifts with ambient conditions, the key material is very rigid and maintains dimensions with temperature and humidity.
Its much easier to manufacture consistent capacitive pads used in digital readers than a mechanical cam mechanism, so they can be made cheaply up to a given precision, and can exceed the accuracy of similarly precise manual vernier caliper by minimizing parallax error. That said I still have a vernier as a sanity check in case of digital caliper failure.
The real weakness per device is quality control and materials, those cheapos can fail later or sooner, or never. My no names are > 6 yrs old and used weekly or so.
In general $3-6 0.1mm resolution and $8-12 for 0.01mm are almost on par, regardless of brand.
If you have no gages or reference caliper to test your cheapo against, US coins are made to 0.01mm tolerances and 0.001 gm weights, your country's mint could be similar.
Why risk damaging your better tools when you can use the cheapos as bangers and loaners and general bench use.