Well...my first thought when shopping to replace an ancient lampshade was “ (expletive deleted) when did lampshades get so expensive ?” , but, I found what I wanted, all while learning the fine art of calculating sizes and the various mounting options...so win/WIN !! The product is perfect, the price was reasonable (by the current standards, if not the good old days when $ 3 at Woolworths would cover both the cost and the bare bulb). Thanks you for the enlightenment...and the GREAT shade !!