You can't order directly through CML, only from a shop which stocks products they distribute. You can check out their products on their website and in the catalogue (lots of stuff not featured on website).
Generally most products from any company are good quality. CML distribute thousands of products from many companies so you can't say they are all strong or good value for money.
Parts from Associated, Yokomo, Fastrax, Novak, Hobao, Proline/Protoform, Reedy, Checkpoint etc are all imported and then distributed by CML.