Exclusive means once you have sold your content it won't be sold to anyone else, so the buyer has exclusive rights to that content.

Non exclusive means you sell it for a lower price but can sell the same content more than once.

So basically if you are planning on offering the two sets, once and once only and won't sell them any more, and no one else can ever buy them or display them, its exclusive, if that is not the case then its non exclusive.