What about at a store selling clocks in the Mall?
[1] https://www.frontiersin.org/journals/psychology/articles/10....
Depends on the mall. I've certainly seen 5K and 10K timepieces in mall stores. In some places abroad even seen 100K timepieces next to high end clothing stores in malls.
>If the clocks are running, they will visibly disagree
Well, going the "low-end timepieces" case, the ones working with GPS or NTP time sync, like Apple watches and sports stuff will be on time...