My recomendation...DO NOT go cheap ! You bought a good rifle, don't cheap-out on the sight..!
As with most things today, you (normally) get what you pay for.
Cheap = No or very short guarantee. Very short battery life. Have to buy oddball batteries. Not sharp/crisp dots. Accidently drop your rifle (pistol), and you'll be buying another sight if it lands ion the sight.
A little more expensive = Normally lifetime guarantees now days. 30,000 to 50,000 hour battery life (normal store bought). Nice round, crisp dots. Even with wearing glasses. Drop one in this category, brush it off, and keep shooting !
Holosun, is a VERY good sight company. Yes they are assembled off-shore, but so is the computer you are working on..! There are a couple other good companies, but I've come to appreciate the Holosun brand for both their more inexpensive and their more pricy Titanium framed sights. Sig Sauer is good, Vortex is pretty good. There are others, but they are up there in cost.