"How much is my old Cannondale worth?"
Ultimately, your bike is worth whatever somebody is willing to pay for it. As we do not know the history of each individual bicycle, its condition, and current components, etc., we cannot recommend the current value or resell value of your bike.
To find more information about the original components on your bike we suggest visiting Vintage Cannondale
To help determine a base line price, we suggest taking a look at the Bicycle Blue Book value to see what other sellers are getting for similar items.