values of my dads guns

My dad was a proud Vietnam Vet who died from the effects of Agent Orange he recieved there. When he died, we divided his guns between his three kids. (Me-daughter, and two sons)
I have decided to sell them as I am currently in Nursing school as well as now that I do not live near my brothers they do not get serviced as they should. They were cleaned one year ago.
I would love some help to give me an idea of how much the value is on these guns.
I have a Savage Arms Model 340C, 30-30, I have a Winchester Model 97 16ga 2 3/4 chamber shotgun.
I have a Remington 12 ga Sportsman 12 Auto (2 3/4 shells)
I also have a Raven Arms Model MP25 cAL 25 Auto with clip. However this is missing one side of the wooden handle grip.

This is a really hard decision, however I know my dad used to sell his guns when he needed christmas money for us, and I know he is proud of me being in nursing school and being the first person in our whole family to ever get a degree and go to college. So if you would be willing to help me get an idea of the value of the guns. I would greatly appreciate it.
Thanks Debbie (Future Nurse with plans to work in a Veterans Hospital)
PS My pic is too big to post. I can email pics... Just shoot me an email!

Sorry to hear about your father, paying for your studies is important and I'm sure he would have approved.
As for the prices I've seen the winchester for 325$, the savage for approximately 600$ (probably less due to its condition), I think the Remington would be about 400$.
What you need to do in order to find what you can get is publish the details on eBay or on other sites that specializes in guns auctions.