There's an awful lot of wavy looking areas on those pics in the Samba ad, almost like it was a semi solid, well preserved bus that got a lick and a splash and not much else, if it needs all the window seals it likely needs a whack of door rubbers and other things to keep it from being leaky and rattly. That's a fair price for one that's had most of that done but I'd want to look at that one really closely before pulling the trigger on it.
Does it still have the horizontal seam above the LH rocker? What does the inside of the nose look like?