Well, I don't know about worthless. Wholesale is a very popular term. Wet wholesale means nothing. But it basically could be a brand name for a wholesaler that specializes in swimming pool supplies. Maybe even bathing suits. Anything to do with water, except I don't think it is a good name for a plumbing wholesale supplier - they usually have more serious names.
I think you could potentially get up to mid $XXXX max for it, but you have to find a buyer and that won't be easy.