They are very fluid in prices so idk how much they are worth.
Here's a picture of them all and most of the names. They got in game during the last broken free gifts glitch. If people contacted support about their problems they were given 10-20 of each Beverly hills mystery box and without realizing gave them the unreleased box III. The box will most likely not be released any time soon since the Beverly Hills theme has ended.

Name: Beverly Hills Pet Dog Photo

Name: Beverly Hills Security Keys

Name: Beverly Hills Hollywood Photo

Name: Beverly Hills Clapper

Name: Beverly Hills Star Doormat

Name: Beverly Hills Welcome Doormat

Name: Beverly Hills Lamp

Name: Beverly Hills Gold Tile

Name: Beverly Hills Sign

Name: Beverly Hills Pedestal Art