Scrapper perk dismantles expensive jewellery worth 750 $ just as happily as the 3 $ junk. Surely, this is a bug.
I'm 18 tech but never picked that perk and regret it. Like you guys I didn't want to lose a lot of money with the game auto-salavaging expensive junk. However: I only got like 5-6 of these and my character lvl is 12. So TBH. They drop so rarely that you don't lose a lot of eddies. Not having to ever care about the junk tab is a luxury well worth sub-10k lost IMO.
Stuff you buy, sex toys etc, are also immediately destroyed.