Increasing from $25,000 to $50,000 the cost of a public work or improvement or the purchase price of supplies or equipment for which the County Commissioners of Carroll County may enter into a contract; and requiring that when the cost of a public work or improvement or the purchase price of supplies or equipment in Carroll County exceeds $50,000 under certain conditions, the Procurement Officer for the County Commissioner shall advertise for bids for at least 1 week in a media accessible to the general public.