This post on how to replace broken glass in a picture frame, was prompted by an innocent enough Customer remark on the cost of reglazing ( replacing old glass with new glass in a picture frame, whether broken or not ) a picture frame that someone had inadvertently stepped on.  The remark was to the effect "Why does it cost so much to to get new glass put in a picture frame?"   Now, the picture was about 50 x 50cms and  the cost quoted was $37.74 which, by the way, we believe to be a fair and reasonable.  Nonetheless the Customers persisted with his query in wanting to know the exact pricing formula.  We didn't disclose it ...