The new Dinckelacker shoes you find on German eBay, are seconds. Quite often the text refers to small color discrepancies, little scratches or creases produced by the lasting process. They all come from the same few commercial dealers, who obviously buy the sub-standards in bulk. Normal shop retail prices for Dinckelacker shoes start at about Euro 375.00 and go up for shell cordovan to Euro 575.00. You can compare them here with Vass (RTW) prices: http://www.handarbeitsschuhe.de/
The Vass retail at a premium of Euro 25.00, but as they include the shoetrees, the two brands are absolutely level pegging price wise and, I presume, quality wise as well. (I've never seen Vass shoes in real life.). Ultimately it will boil down to which maker fits your particular feet better. The seller "fabercomtec" shows in his eBay offers the recommended retail price and they are pretty correct.