Don't want to say the name of the store but starts with L and ends with S . Last 6 months M copper pipe 1/2 " x 10 ' 16.48$ and L copper pipe 1/2 " X10 ' 11.68$ well as long as I have been a plumber L was always more expensive than M . I make this point to the plumbing manager , the store manager and some guy at corporate who could care less about my concerns with their pricing . Not a big problem as I buy most through wholesale houses , but occasionally it is much more easy to grab a piece or 2 while I am there anyway . Just aggravates me that they have no clue . Would assume someone up the line made a mistake with pricing but they claim those prices are correct . Menards and Home depot price theirs like everyone else