OK, hear me out on this....
I was watching the new Shop til you Drop tonight, and one of the games played seriously resembled TPIR's Clock Game. JD Roberto would show the team an item, and they had to guess three prices of three items in a minute. They had a $500-$1000 range to go in, and after each guess JD told them if the right price was.....higher or lower than their last guess.
Thoughts? Maybe not serious enough for copyright infringement but a definite ripoff of Clock Game, IMO.