That's a good point, but not one I think the manufacturers could easily answer. Its my understanding that at least some of the factories in China produce runs of a model, there by once the run is finished they can go on to create other products for other manufacturers, that way the main manufacturer (Hornby Bachmann etc) do not have to pay the full brunt of running the factory.
Also, with changes to working laws (minimum wage etc) and increase in production prices (cost of buildings, cost of oil / electricity to run said building) you would only be able to hazard a very vague guess, and very vaguely it would be considerable more than China!
Who knows, these developments have only happened in the last 30 years or so, as the Chinese economy takes off production prices will increase and in another 30 years we might be going round a full circle and find it viable to create in Europe again.
Also, with changes to working laws (minimum wage etc) and increase in production prices (cost of buildings, cost of oil / electricity to run said building) you would only be able to hazard a very vague guess, and very vaguely it would be considerable more than China!
Who knows, these developments have only happened in the last 30 years or so, as the Chinese economy takes off production prices will increase and in another 30 years we might be going round a full circle and find it viable to create in Europe again.