Well,Im not exactly the "old, super rich, fuddy type" but I do love my O/U's and Ill tell you why. Take my Browning Citori 20ga,for example. Its not 4k but it sure as hell is a quality piece that anyone can tell as soon as they pick it up. Its the general feel,the look,the way it points,the wood,the metal to wood finish etc. Even the way the action locks up with that solid sound. Now if your clay shooting,or hunting,its really nice to have two barrels with two different chokes,one open for the first close fast moving target,the second tighter for the further away target. When your walking between stations with the gun open,everyone knows its safe at a glance,so you dont have that trust thing you do with pumps or semis.
Now about SxS's being cheaper than O/U's,dont think so,check out the new Holland+Holland,the Boss,Parker guns or LC Smiths. You can spend more on a SxS than most people spend on a house.
Theres just something very classy about twin barrel shotguns,it has a certain appeal to anyone that values tradition,craftsmanship,and true function.