Welcome to the site! Yes the pricing especially from dealers can be vastly ranging, seen some for ridiculous money because they had "low" mileage. We've had 3 and not seen any rot, but ours are all 2002 / 2005. All our we're petrol, on LPG, so not had many of the running problems of the diesels. I changed the wheels on 2 of ours, porous on one and scabby on the other!! Try the PCD checker website as a backup. Yep the central locking motors can be a problem, bu they cost pennies to fix. If your family is growing and you are using buggies - you WILL notice the difference to the Grand, our twins buggy wouldn't fit in the shorter Voyager with the rear seats slid to the back. Handbrake not holding - yes got that, so I park it in "Park" it clunks when i comes out on hills, other than that not a worry for me. In 12 months and 11,000 miles a set of new 18" Accelera 245 50 PHI R wore by 1mm on the back from 8mm centre 7mm outers. No they are not the same depth all the way across I measured brand new ones.The fronts were down to 2mm so I replaced them, for more Accelera's. Top front suspension mounts - yep fairly common, but is that because we talk about it and other car sites don't as it's an easier / less expensive fix so just gets done? Wiper stalk problems, I've had the indicator not self cancelling on one of our cars. Got a brand new pattern unit recently for £28.00, and 20 minute to replace it. No problems as yet! with the lights. They are super things to drive, we also now have a 2007 Ford Galaxy Ghia with loads of toys, panoramic roof etc, but the Grand Voyager is a much nicer "posher" car (and in petrol / LPG silky smooth), and he Ford is far from fault free!!!!