Hi Elizabeth,
Well, they do sell them here. However, I have yet to see anyone use one properly. I hear parents do use them more frequently in Algiers and Oran, the larger cities. I am in Setif where it is commonplace for parents to hold small children in their laps in the the front seat! And it is a struggle to convince folks to buckle them up in the backseat.
Definitely safety first. Fight them tooth and nail to install the seat properly because the drivers are crazy here.
Good luck and God Bless!