Seeing as this is a public forum I really do value that feedback, many moons ago when I was still considering the jump from
G to H I was equally concerend about whether I was doing the right thing or not. Yet that was a GM dealer buying a much newer car - so I guess it is way different to what we are dealing with here.
I respect your buying/selling private only policy and also I am quiet glad it has worked out that well for you in the past. Rest assured that my last purchase, the Astra H, I had them drive it all the way from Worcester to Stellenbosch so my mechanic can check it out. A close family relative of mine did the same with a Jetta Mk4 from Worcester and the mechanic found major accident damage. So much so they took the car off the market perused legal matters against the person who traded it in.
Long of the short, I'll hold on to my Corsa D until I am sure this a worthwhile deal for me. I do not pin a lot (or anything) on dealer confidence. I'm just glad you can put a little substance to that because while me and you might be old enough to suss-out thing there are many that will be reading this going purely on impulse.