We got our first clipper as a gift and needed to replace it after 10 or so years. Then I bought a new one, which was the most sturdy and expensive one for home use in that shop. It works well and we have now had it for more than 10 years, I think. The battery is getting worse, but we solve it by reloading it during many hours before use. Then it holds for one haircut. I would invest in a good quality one, which probably makes the cutting job easier. But you need to count on such a machine not having an eternal life.
Just calculate how many haircuts you will save in a year. Then the machine probably isn't so expensive.
If you also need scissors, you can order good quality ones from Ali Express. If you there would buy a more expensive pair (still costing only 10% of a similar item here in Norway), you might get a very sharp pair.