The photo of the Phaeton with the blue tarp thrown off is very intriguing. It looks as if a bucket of water and some Simple Green would prep it for an afternoon under a tree with a polish cloth. On the other hand ...
You will never know unless you go get acquainted with the car. Take along your best Model A adviser -- or at least a friend with some mechanical ability.
Don't be shy. Look (and feel) it over carefully. Get them to crank it over and maybe start it for you.
Sit in it.
Figure your budget. Don't go crazy. Remember the axiom -- BUY LOW.
As my very wise father used to advise me, there will always be another car.
(But until you've taken a Model A apart, painted the pieces, put it back together, and driven it down the road, you haven't really had much fun!)