With respect to the Hornby Dublo range - my view is that these will appeal for the most part to the collector. In some respects tapping into the market that some of the kit built loco's you've sold on on behalf of grieving families. The Hornby Dublo range are nostalgia items and a way to make as much capital from existing CAD tooling. Quite understandable Hornby, Bachmann and the others are there to make profit and satisfy share holders.
But the cheap days are over in the hobby. A buoyant second hand market is all that helps with stretched pockets.