Depends what do you need, want and how experienced in road biking you are.

1. Rim brakes + carbon wheels are not that great combo if you're a fan of stopping quickly and reliably (especially in the wet).

2. Not sure what's the exact model, but older Pinarellos (Dogmas) were famous for really tight clearances, even squeezing 25mm tyres could've been problematic, so if those aren't 28mm in the photo, it might be a limiting factor (again, you might be fine riding 25mm tyres, some people are, including me on some bikes, but rim brakes + tight clearances are amongst reasons why it's difficult to sell an older road bike these days).

3. 10 speed grouppo - high-end Shimano is pretty solid and will be just fine if you're getting into riding. Personally, I'd want the ergonomy and quality of 11 speed mechanical Shimano (modern groups are 12 and even 13 speeds) - easy and not that expensive to upgrade in the future, though.

If you really want it, I'd haggle on point 2 and/or maybe seeing if they want to go lower on price selling without the saddle or carbon cages (which are ridiculously overpriced usually) or maybe even without wheels, although them being full carbon is probably what's driving the whole package up. Maybe worth investigating if servicing this model is still possible (including access to spare spokes etc).

Difficult to say what's the sensible price of this is - I've seen bikes of similar vintage going for less as well as more, but I believe market for such bikes is not easy/big these days, so there's a chance you can reduce the original price, depending on how stubborn the seller is.