Hello how may I help you? I want to buy something. ok, i can provide info about stores and businesses I'd like to purchase one mousetrap. alright, the local dry goods store has single mousetraps selling for $5 Great, I will pop by later to buy one but there is currently a sale on one dozen mousetraps for only $8 No thanks, I only want one. the dozen mousetraps is a much better deal, only a fool would buy a single one for $5 when 12 can be had for an extra $3 Sorry, only want one how about 200 moustraps for $20? No thanks! suit yourself