Personally I think it is usually easier to buy the expensive locked item if it is a store that has a separate checkout inside since it makes the employees who interacted with you trust you and you can carry it around the rest of the store as “I’m a real customer who already spent a lot of money” flag while you nab the easier items.

That’s what I was referring to by suggesting asking for further directions to other items and walking away. You appear as if you’re still shopping and don’t arouse suspicion because most people who steal try to be so covert that they stand out. It’s how I got some batteries lol. Asked the guy to grab it for me then asked where the camping lanterns were at

In the US, you’re not obligated to stop and show receipts or prove anything. You can just walk out and ignore them. Though a long term plan may involve playing ignorant if caught instead of ignoring them