> Dollar for dollar, a bagged vacuum, when compared to a bagless, will almost always: ... Cost less to repair and maintain (Often including consumables).
He says elsewhere in the thread that "you're going to budget more than [$400] if you want a quality vacuum". He calls anything under $200 "pure shit". He recommends cleaning the brush roller monthly, and changing the belt in the vacuum yearly. He recommends a brand that sells a pack of bags and a filter for $100 that's "a 2 year supply".
Sometimes I wonder if people in threads like this Reddit thread live in the same universe as me. So many times it's cult-think to justify spending absurd amounts of money. (E.g. "obviously that $200 fountain pen is going to write so much better than a $30 Lamy.") The trap is when you start thinking "people who really care about X buy Y brand", and then you start thinking that way about everything.
For reference, I own an upright bagless Black and Decker that I bought from my local big box store for ~$70 over five years ago. I have never replaced any parts. I've cleaned out the brush maybe once in that time. It still sucks just as much as it does when I bought it (you can fill up half the damn canister on one vacuuming run). Even granting that I could get a bagged vacuum that would last the rest of my life for free, the $50+ a year for maintenance would cost me more.
(Granted, a more expensive vacuum would probably clean better by some metric, but this vacuum does not leave any noticeable dust or debris or my very low pile carpet.)