Luke true gold second hand value

OMG want want want!! But can someone tell me why second hand value for these Luke true golds are sooo high? I know they are rare with 250 made worldwide. Seen one currently for sale at £3500. That’s a bit much.. is it?

New to forum. Proud owner of an original luke 1 pearl blue and Luke 2 graphite grey (I think that’s the official colour)