Hi Cindy,
Congrats to DH!
You can do a search on Ebay and that will give the current going rate for the pins you have. Keep in mind that 'going prices' on Ebay can change as quick as the wind.
Also, check out Pinpics.com. This is a huge database of mostly Disney pins. If you click on a particular pin, there is a 'wanting/trading' number. While this is just a general guide, it can help you get a handle on the demand of a particular pin.
The wanting is how many collectors desire this pin. The trading is how many collectors have this pin for trade. Like I said this is only a general guide, as it only indicates the collectors who have actually marked this pin as 'wanting' or 'trading' in their Pinpics account.
hope that helps!