Is eating honey offered by a seller while inquiring about its price, without the intention of buying it, considered unlawful?

If honey shops offer a tasting to a customer who does not intend to buy, they must be informed of this. If they then permit him to eat it, there is no harm. Your acceptance of the honey tasting without informing them of your disinterest in purchasing is a mistake that necessitates repentance and seeking forgiveness, and asking for pardon from the shop owners if possible.