Nowadays, most of the laptops come with a backlit keyboard, so if you own a fairly new laptop model, regardless of the price, it should have a backlight keyboard.
A backlight keyboard is still a standard chiclet keyboard with lights underneath the keys, that’s it. In laptops, almost all keyboards are chiclet membrane keyboards which are made for a smaller form factor than a traditional desktop keyboard. There isn’t much difference between a backlight keyboard and a standard keyboard.