Very nice rifle! While don't pretend to be right up on all the variations of 98's, this one is not at all common. It is worth a lot more than $750.
As I've said on here before - Three things to do if you are planning to buy/collect military surplus rifles: 1.Do your research; 2. Do your research; 3. Have cash ready.
No real good excuse nowadays for not researching, with the good old internet and good sites with people who know what they are talking about.
When I was much younger, I had to decide whether I was going to buy guns or books about guns. I bought guns, and a few books. I now spend a lot of my time researching the guns I bought years ago, and still buy guns. I'll be 75 in a month, but I have never given up on learning. Just learned, to my surprise that Winchester 67 22's have one piece action and barrel. Jeez, I have a couple and never noticed!