About three weeks ago I ordered a QSC amp and a pair of JBL monitors from American Musical Supply. I got the merchandise a few days later, so far so good. But today I get a Sam Ash catalog and -gasp- the exact same monitors were $100 cheaper (each) at Sam Ash. Well, American Musical advertises a 45 day lowest-cost guarantee, so I promptly called Customer Service. They politely took my info and said they would investigate and let me know tomorrow. I've done a lot of business with AMS over the last ten years, and this is the first time I've needed their Customer Service. Let's hope they back up their advertisements; I expect them to credit me with the difference (hey we're talking $200 here). Good or bad, I will post my experience tomorrow after I get an answer.