Is it worth restoring an unused AE86

[vlgi]

The only thing I could see causing a problem from storage isn't really rust but perishing of rubber components, bushes, belts, pipes, etc. Typically they become hard and brittle and may cause problems. If its been stored in a garage it shouldn't really have rusted, even so its likely to be pretty mint.

Similarly the oil / brake fluid should probably be changed because its not really meant to be used for that long and may break down or something.

Once you've checked those things it should run fine.

And is it really 3K from new? That blows my mind