Last year a guy I know called me kind of angry. He’d asked for a quote on a teflon cartridge filter and the number was triple what he paid for his usual polypropylene ones. He figured somebody was padding the invoice. Nope. The price was real, he just hadn’t been told why. So that’s what this is. I won’t quote dollar figures, they change every few months and I’d be wrong by the time you read this, but I can tell you what moves the number and where I’d cut corners and where I wouldn’t.
