Is there any way that sets, cards and binders that you have listed could have a price or price range of what they are heard of selling for?

I am thinking about ones like TSR Advance Dungeons and Dragons. I have no idea what it is worth and I am 26 cards away from having a complete set. This inclues the 2 Dragon magazines with the cards in them.

I have a very large collection that I'm making a database on what they are worth as I am considering getting it insured. My Database calculates the percetage of cards I have in a set and calulates it to percentage of value of the set based on useing your guide.

I think a price range would be good as I know that others are based on average sale and seeing they are hard to pin point as I am sure there are not many being sold this would give people an idea as to what they have been selling for.