When I bought my Mazda they handed me a sheet of paper that showed all the various items they offered for $995 on up. About the only thing that looked worth while on ANY of their “packages” was LoJack, but I know of atleast one place here in town that installs it(or used to anyways) and it’d be cheaper than letting the dealership install it.
Thankfully they asked only once, then put it away when I said no.