Dealer want to replace key control arms, is this tie rods? Is $1200 reasonable?

tie rods are steering; control arms are suspension. the problem that you have is that very very few shops will even work on Land Rover. parts are hard to get, the dealers are awful and not many of them. most owners never consider service costs when they look at a vehicle. according to jd powers vehicle dependability study, Land Rover is almost at the bottom of the index. just so you know.