I did see a display at the Schaumburg Nextel Corporate Retail Store.

Here's the catch, though:

If you purchase a limited edition iDEN Phone (Baby Phat, Phat Farm,
Bloomingdale's, or even Nascar), then you can't get your phone serviced by
Nextel whatsoever, even though you have the Nextel Service Plan Insurance.
You will have to ship the defective phone to Motorola if you have any
anomalies, causing you to be Nextel-less for 1-5 days!!!

The Nextel Rep told me to wait until the i830 comes out, and he suggests
that I stick with the "staple" Nextel Phones (i730, i205, etc).