Orders with quantities of 299 units or less are duplicated using CD-Rs. Quantities of 300 units or more are replicated using CDs.
The online quoter will change the type of manufacturing based upon the quantity that you enter.
The same applies to DVD-Rs and DVDs. 300 units and up will be replicated DVDs and 299 units and less will be on DVD-Rs.
So, if you would like replicated CDs or DVDs you will have to order a quantity of 300 units or more, and the manufacturing method will then change to a replicated disc.