Used Perfume For Sale

How should I handle a tag/garage/estate sale when they post a sign “No Reasonable Offer Refused”?
I’ve found what a buyer considers “reasonable” differs significantly from what the seller expects. For instance, at one sale there were some Avon perfume bottles that weren’t marked. When I asked the price, the person running the sale said “Make me an offer.” I said “Fifty cents each.” She looked like I just slapped her across the face. Then she responded “For Avon? Those bottles are worth at least ten dollars apiece. I think I’ll keep them, then.” To which I replied, ” For used and empty bottles? I guess you will!”
I think it would be better to just mark what they want on the items to avoid confusion and embarrassment on both sides.
I totally know what you mean. I think that it is extremely lazy for people not to price their items in their sale. If they want to price them and then also put up a sale saying that they would accept reasonable offers it would avoid a lot of confusion. That way customers will know what the seller thinks is a reasonable offer.
Heartcatch PreCure! ~ Kokoro Perfume