Flyingmule.com has a sale, mostly diecast, but it includes 21st Century's 1/18 Mustangs, "Ridge Runner III" and "Flying Undertaker" for $49.99 each. Use the discount code "SP39561" and you get 10% off---$45 each. Orders of $100 or more get free shipping. Coupon code expires on Jan. 30.
(I posted this on the 1/32 board in reply to someone else's thread).