First Time Buyer - Please Help!!!

[swesterm]

I'm a first time buyer and I could use some help. My wife really likes the Oyster Perpetual Date. She tried on her friend's watch and loved the colors. I realize that the attached picture is 1) a datejust and 2) has diamonds all over it. I'm looking for a watch in the same color pattern in this attached picture in the "Date" version and without the diamonds.

1) Can anyone please recommend a place to get a pre-owned watch like this?
2) Any opinion on what a fair price is?
3) Is the face matte grey?

Thanks!!!