In most cases, what you see on your monitor is not what appears as a print. After all, you are moving from a light source RGB to a print, whereby lots of factors determine what the print will look like.
We work with calibrated EIZO monitors that are attuned to our printing process. Our experience is that many artists and photographers work with an Apple monitor or a monitor attuned to film or Internet use. In addition, the settings of Photoshop are of tremendous importance and also whether you have saved the file with an ICC profile. If that is not the case, the outcome in colour is unpredictable. It makes a huge difference in what colour space within Photoshop you work. Is it S-RGB, Adobe RGB or Pro-Photo RGB? All three lead to different outcomes in print when they are converted to the inks that we use for our fine art and giclée prints.