Weird. I can get one at the local Microcenter - with headers, the only one they're selling right now - for $18. They have a bunch in stock.
Amazon/eBay prices are indeed gospel. You can ship something like this across the country for <$5 so location doesn't matter unless you're talking tariffs
Is 10%/$1.50 enough to pay for the retailer's freight, ~3% fee to accept credit cards, inventory carrying, rent, payroll, shrinkage, support/RMA, and fraud?
https://data.fca.org.uk/artefacts/NSM/Portal/NI-000098822/NI...