price help

Ok the guy right behind my work has 2 supras sitting behind the fence, i sit and drool over them all day, both turbo's one is a 91 the other is an 88, neither run but body/interior in excellent condition,

Any idea on what i should offer?
Been sitting under car covers for almost 3 years and im getting sick of watching them rot.

i live in michigan so a rustless car is kinda rare

$1000-$1500