Sometimes a store has its own counter checks for the convenience of its customers. A counter check is not negotiable and is so marked. The traveler signs the checks at the time of purchase and should counter-sign the check only in the presence of the person who cashes them. In addition, a Money Order can be passed as a check. However, a money order is usually sent in the mail.
Some small stores sell money orders.
If yours does, never accept a personal check in payment for money orders. The check is possibly no good. Close examination of such key items can sometimes tip you off to a worthless check. Use extra care in examining a check that is drawn on a non-local bank and require positive identification. Examine the date for accuracy of day, month, and year.