The Chrysler 300 Grill has many styles of on the market now and they vary in price from the low hundreds to several thousand dollars for the top of the line Chrysler 300 Grill. Below you will see some of the examples of the Chrysler 300 Grills that are available at your local custom shop. Installation of these grills is usually a couple hour process at the most, and your local Chrysler dealer can do the install at the time of purchase, or you can have the grill installed at a local aftermarket shop for less money than the dealer will charge.
Most of these grills will require that you also purchase a Chrysler Emblem to finish the look, and the grill supplier will usually be able to order the Chrysler Emblem as well...be sure to ask. Also be sure to tell the installer that you want the original Chrysler 300 grill back, because you may want to return the car to the factory look at some point.
The most popular style of Chrysler 300 Grill is the Bentley mesh style that you see in the first photo below. The average price for a typical Chrysler 300 Bentley style grill is around $699, but you can find them cheaper if you do a little research.
Chrysler 300 Grill - Source.