Yes, they have value, but usually not very much. Typically from $1-10, with most around $2-4.

JPG files display just fine on this bb. If you want to show your chips, go to the "File Upload" section, accessed from the yellow bar at the top of the main screen, and follow the directions. You must move the JPG file from your computer to a server in the web for us to see it. Greg provides the "File Upload" facility to put your file on his server for this purpose.