60 bucks, huh

? That looks an
awful lot like a bit of polystyrene foam with paper faces, like a super-sized bit of foamcore. Not to worry, I finally found a decent description of one way to do it once I took all the modifiers out of my queries and just queried "drywall arch,"
http://www.findarticles.com/cf_dls/m.../article.jhtml . Now of course I've run into another problem (when will I learn to do things the normal way instead of doing something out of the ordinary???) in that of course the big box stores do not carry 1/4" drywall, never mind 1/4"
flexible drywall. Or flexible drywall corner bead. I thought I might save a trip to the "other side of the tracks" as it were (where the contractor's supply outlets tend to be) and have them just order me a sheet. However when I asked at the contractor's desk, the fellow on duty had to ask somebody else about it, and then said he would have to call USG to see if they
made it as he was not "... familiar with the product." It's enough to make a person despair

. I guess I'll be calling the "real" builder's supply and drywall places Monday to see if I can find one that will sell me ONE piece of 1/4" flex.