Does anybody have experience in replacing car stereos with aftermarket products?

I have a nearly 20 year old car with a CD radio. The CD player died years ago (yes, I’m old. I still listen to CDs), and the radio amplifier blew. The car is not worth a ton of money but it’s cheaper than buying a new car.

I’ve called around to local places and they can install a new system with Apple airplay, a CD player, and a backup camera (I don’t have one) for around $1000 ish, plus or minus.

Is that about right? Do people have any experience with this sort of after market installation?