Chronomix will allow a $200.00 trade in for certain earlier models against the purchase of a new CC3000 Series Display or a CC737 Printing Timer at retail price. A trade in of $100.00 will be allowed against a new CC7300 Display at retail price. The earlier models which apply for the $200.00 trade in are: The CC727, CC731 Timers, and the CC601, CC1000 and CC2000 Series Displays. The trade in value of the CC707 Timer is $100.00.