They do become available on E-Bay occasionally but your search is more difficult because you need the more rare trim piece specific for a roadster (that has the hole in it for the top switch). Here is a current listing for the complete center console.

http://www.ebay.com/itm/Chrysler-Crossfire-dark-slate-gray-center-console-/221378933630?hash=item338b36737e&vxp=mtr
Here's another one (I think) . . .

http://www.ebay.com/itm/05-06-07-08-CROSSFIRE-CONSOLE-FRONT-FLOOR-CONV-MT-366457-/381230361293?fits=Model%3ACrossfire&hash=item58c319aacd&vxp=mtr
So you've taken the console out and found that one end of the clip has broken off, right? Do you have the broken piece? If so you can get some epoxy glue and glue the broken clip piece back in place. Then after the epoxy sets up thoroughly (don't be in a hurry) and you pop the top switch back in place, you can put a cable tie / wire tie around the entire clip in section to hold it more securely. I've put cable ties on my power window switches to hold them securely in place.