I agree that the smiles on the faces of your family are the best indicator of the value of DVC!! If you want an actual $$ amount, Multiply the number of points you own by about $74, and that will give you a ballpark. Of course, a lot depends upon if you are selling with the points stripped from the contract, which decreases the value to about $70 pp. I think my points are worth every cent I paid!! I called CRO today to check on a night for which I haven't received a confirmation, and they told me I had stayed there over 40 times!!! That does not include any DVC visits, so I have more than gotten my money's worth
Seriously, are you asking what you could sell it for? Most resales at WDW resorts are going for around $70-$75 per point depending on banked or borrowed point status.