I suspect many buyers would go an extra 10 % for a brand with significant improvements in quality. However, based on what I see from the custom TT market 10 % would not come close to solving the problem.
Other than the obvious incidents when a window falls out, a water tank drops, dead electrical shorts happen and other such catastrophic instances that no one can justify. It seems one person’s crisis is another’s major annoyance.
I doubt that the readers of this post could even agree on the top 10 most important improvements they think the TT industry should make; which they would be willing to pay an extra 10 % for.