Thanks for everyone's thoughtful replies.
The reason I ask is because a client asked about giclees even before the photo shoot. When I went over to take pictures (and sign contracts), I brought up the giclees. I told her I think it would be alright if we did that.
She replied - oh good - my brother does giclees.
Obviously, she's going to make a family deal with her brother - and both the quality of the reproduction and any profit to be had is out of my control.
What do I do NOW?