An "open" sign in your window would indicate that you are just that, open for business. Upon entering I found a man quite unable to assist me with any questions I may have about any book within or without this tiny and quite shaby storefront. I collect very rare books and might have been glad to commission him if it were not for his very rude and ambiguous behaviour. Hint to seller, when your sign says open be prepared for visitors and if an inquisitive woman should enter wearing armani and mazrahi, you may want to give her the time of day.
Best regards to you, but I'm sure I should never reccomend your services.