RE:RE:RE:RE:RE:RE:RE:$400-$500 per detection chamber? That's crazy... I always give benefit of the doubt until I detect a tone, then it changes. Okay I'll add some words to help you. Ink cartridges never did cost $500 but everyone has always whined they were expensive. Also, licensing rights to manufacture non-oem cartridges makes money still (it is quite an industry). And the printers get ever cheaper and even after everyone who ever wanted a printer bought one the "cartidges" (toner falls in here) still get scarfed up. I bet 20% of the people reading this board understood my point. Extrapolate my insult from that.Cheers!