The Technics SL1200LTD is not that limited, there are a few thousend of those models sold, but nowadays it is probably a rarety. So if you are looking for somethiing really special and have the money laying around doing nothing, you could go for it.
If you are just looking for a turntable, buy a regular model (without the gold) as it performs the same and only costs around 400-500 euro brand new. My personal opinion is that this is to much money... but I'm only playing with USB nowadays...
Nobody can tell you if it's wirth it or not (taking your wallet in consideration). Most people will find it to expensive, but nobody can speak for a collector (perhaps), as they spend more money on such things than other DJs