Last weekend I took my youngest daughter to a local thrift store (charity shop in the UK) - She's at the age where "vintage" clothing is cool. While I waited for her I wandered through the section dedicated to books and media. The records and CDs were the usual stuff: Barbara Mandrell Christmas album etc. When I came to the book section there was a woman with a cart who had some kind of scanner in her right hand while a large smart phone was strapped to her left wrist. I can only presume she was scanning the ISBN barcodes - social distancing kept me from approaching close enough to be sure. Every 30 or 40 scans she would drop the book in her cart. This woman looked as if she hadn't read a book since 5th grade but she could handle a scanner. I'm guessing there's an app for this linked to Amazon and she was skimming the most likely candidates that would make a fast buck. Of course my thoughts were "I wonder if the same hustlers are doing this for music?". I wouldn't be surprised if a lot of the stuff on EBay is being sourced this way. Thankfully Discogs is crowd sourced and so fragmented such that a barcode is just a small part of the verification process for "rare" CDs and LPs in most cases. Most likely the thrift stores themselves are using similar methods to filter out the low hanging fruit. Although if you were to look at the Goodwill auction website you'd be hard pressed to believe it - so much overpriced crap in poor condition, most of which goes unsold. What I'm really saying here is that the fun of being a collector is being throttled by greed and digital technology. As far as I'm concerned I've pretty much given up looking for the few remaining "Holy Grails" missing from my collection. Scanner woman and her cohorts have spoiled the fun of the chase.