The Crossfire is a rare car, and relativly unknown by the "general" public. Long forgotten by all the automotive magazines, and most TV car shows as well. That being said, we're pretty darn lucky to have ANY 1/18th. scale models of the Crossfire ever being built.
Now with pallets of them showing up at "warehouse" style stores, it sounds as though their "limited" production run is probably over, and they're being dumped for wholesale prices.
If enough people emailed the company that builds them, they might be persuaded to build a Roadster.
I had to wait nearly 30 years for somebody to finally build a 1/18th scale model of my AMX, I bought one in every color offered.