If the store is selling bag #1 at (let's say) $100 and whenever a customer asks to see it, the clerk says, "oh you don't want that, here's a bag that's just like it for $75", how is the $100 purse ever going to get sold? Doesn't make sense.
On the other hand, if the customer asks to see the $100 bag and the clerk wants to suggests additional bags for the customer to look at, the clerk is then showing several items of merchandise for the customer to decide between.
I've gotten the "you can't afford this" treatment before. I can't imagine what they based that on aside from the brief moment they've had to assess me based on my looks. Maybe it was the way I was dressed or the way I wore my hair, I dunno. But I can well imagine that Oprah was wearing expensive clothes, and was, to use a French expression, tiré ŕ quatre épingles. So aside from her clothing/hair related appearance, what else could she be judged upon at a glance?
Since the two stories vary so much, we'll never know what was really said. But I just can't imagine how this clerk makes her money if she doesn't show the merchandise when asked.