So no . . . all shops aren't like this. Different shops are engrained into the local cycling community to different degrees, and that sure impacts the experience anyone has in a particular shop.
But if you said, "I want out as cheap as possible" that creates a barrier for just about any transaction.
I do understand that but I also know when I meet a used car salesman. On my first trip I tried a Marlin 5 and was told how great a bike it was. On my 3rd trip I brought in the used 2017 Marlin 5 I bought elsewhere and was told how crappy a bike the Marlin was. Excellent when I was about to buy a couple months before but now crappy enough that I needed a new one when I had a Marlin 5.