CCC acts as an agent for copyright holders and does not provide copies of articles. They already have the authority to grant permission to make copies from a large number of periodicals and books. If they do not have authority for a particular title they will contact its publisher for you. Royalty fees are determined by the publisher and not by CCC, so CCC cannot tell you in advance how much the royalties for a particular article will be.
Publishers sometimes refuse to grant permission to copy a particular article.
For those titles already in CCC's database, permission to copy is usually obtained within a day or two. For titles not in CCC's database, it will take substantially longer to obtain permission, possibly as long as several months. Therefore, it is important to contact CCC long before the copies are actually needed. Many instructors use this approach in place of a regular textbook for a course. The TRS is used for making one copy of a copyrighted work for any use that is not covered under the Fair Use Guidelines.