We had a similar problem at work, we also needed to copy large amounts of cd's with press-photos.
We bought a small cd-duplicator with one master and one slave slot.
The only thing you need to do is put your original cd in the master and put in the number of copies you want. The machine automatically drops a blank cd in the slave drive and drops it when its done.
It was about the same as
this one.Very easy to use and not to expensive.