The prices of Series 2/3 land rovers, world wide have gone up ten fold over the last few years, its just the same as years ago when the series 1's went up in price, the series 2/3 are now in the collectors segment.
The days of the land rover being a cheap run about are few and far between, If we have the likes of the Workshop on ebay selling for 4k or more then a mint condition fully restored one in my opinion should be worth 8/10k maybe more if its some thing special. Supply and demand, theres far less going around, and those of us who have one or ten, will have a small gold mine in a few years.
The same goes for parts, as we know alot of the parts are no longer made, and as such old stock is getting very hard to find on some items, and when found the prices are very high.
Watch out the series 3 will be next in line, and in a few years early 90/110's.