Maryland Commercial Law Section 14-104
§ 14-104.
  The seller shall disclose the total price or unit price, as the case may be, for each item in the following manner:
    (1)   If the item is visible conspicuously to the consumer, by attachment of a stamp, tag, or label:
      (i)   Directly on the item or its package; or
      (ii)   Directly adjacent to the item or on the shelf on which the item is displayed; or
    (2)   If the item is not visible conspicuously to the consumer or if the stamp, tag, or label would not be visible conspicuously to the consumer, by a sign or list which contains the price information and is visible conspicuously to the consumer.