iv just got my first defender a 1997 300tdi 90 and i absolutely love it.
anyway... my point is i looked around for about 4months before i came to the decision to buy the one i got, and im so glad i did. the money i paid for it, compared to some of the others i looked at at the same price, well lets just say some people were dreaming.
dont worry about the age of whatever you are looking at, land rovers and prices all depend on the condition not the age and im sure from what iv seen so far, there are plenty of people on here who would be willing to offer help and advice
good luck searching