There are books available containing guide prices, such as Rosie's Secondary Market Price Guide. As with most collectibles, the best way of valuing the item is to research online at sites with selling pages, such as eBay and HugeDomains.
These miniature replica cars were introduced by Hallmark in 1992. They are scaled down replicas of full sized pedal cars from the 1950-60s. Each car has a specific identifying number. Hallmark later produced Sidewalk Cruisers, Classic Cars and even miniature models. These were smaller than the standard 6-inch replicas. Display settings were added, and in 2001, the last model was issued.