If out of 2 people, the body of only one is visible. 2 faces though, do I chose 1 subject? It is not too much detail. Send me quote asap, I have o order today!
You would choose 2 subjects, assuming you care about the rendition of both people. If you choose 1 that's fine, though the second face may not be done in detail and treated as a background instead. The price you are quoted based on your selections is the final price.