It isn't just about the sale, it is the resale. I am happy to pay out for a top quality diesel or electric model from Bachmann or Accurascale because I am confident I can get a good resale value if I want to sell it later on. It is likely to still be desirable and working and buyers on the second hand market can be confident.
Hornby Class 60 and 08 super details for example got me back into the hobby after many years. What has gone wrong since then we can see with the recent APT (a flagship model on the front of the catalogue) which although looking really good and a very desirable model - it has pantographs that cannot be positioned or just falls apart, a power car that cannot cope with gradients or curves very well, if at all, an overheating capacitor which melts the bodywork and a body shell which cannot readily accommodate a DCC chip.
I wonder what kind of reception that model would have received if Hornby had completed the design and production with the same finesse they have shown in their advertising - we would be too busy throwing our money at them to bother to check our overdrafts.