Yeah, as infamous_t said, there's no fixed rates. Depends on the exact type of skyline, mods, your licence (how long you've had it & any fines & previous accidents, etc), your age, and a bunch of other stuff.
I was quoted $2,000 just to insure mums magna for me to drive it lol. $2,600 for my car, so needless to say I'm not going to bother with fully comp, silly POS isn't even worth that lol.