I'm not interested in the gun ( I had a 525, bought new in 1998, and didn't like it / way too much drop at the comb to fit me personally ). But just to tell you what I know about the ( 325, 425, 525, 625 series of the Browning Citori ) ...
The 525 series Citori was made from 1998 - 2008 or so by Browning. The new version, since 2008, is the 625 series and it is still in production. The 525 is no longer in production / but I do know there are still some available new in the box around the country ( ads in shotgun sports, etc most every month).
http://www.browning.com/products/ca...e_id=355&content=citori-625-sporting-firearms
List price on the 625 sporting is $ 3,560 --- but its retailing new in my area for around $ 3,200.
The 626 sporting is available in 12ga, 20ga, 28ga and a .410 ....but in the 20ga version its a 7lb gun ...so its a little light (in my opinion ). Personally, I like my O/U's even in 20ga, 28ga and .410 with 30" barrels and up around 8lbs or so.
At around $ 2,000 its probably a decent buy ( if the gun fits you ) ...they have a lot of drop at comb and at heel ... The owner says he has a 12ga and the 20ga version / so he may have decided he didn't like the lighter gross weight on it ...or just isn't shooting it ( maybe he bought it for his wife or something ...) who knows ....100 shells is a half day at any gun club for most of us ...so there has to be some reason he didn't shoot it ...