If the barrels are straight and you're willing to jockey with the stock fit, there would be no concern by me. A real problem would be where one barrel shot to a different POI.
I suggest getting the gun for "inspection" with the stipulation that you can shoot it. Before shooting it, check the barrel straightness by laying the gun on its side and looking down the barrels. They should be straight. If they are curved down, I would probably pass unless the gun was very cheap for the quality (Barrels can easily be bent up/down. It takes about 10 minutes of setup and but a half minute to accomplish. But there is always risk of rib delamination. Not much, but some.)
But back on track, if the barrels are straight and it shoots both barrels down, it's almost assuredly stock fit to the shooter. This problem is curable within the comfort zone of most members here, thru stock bending or adding/subtracting to the comb. If the gun is everything you're looking for but for a bit low shooting, I'd consider getting it with the understanding that you'll spend a couple hundred to get the stock bent. So, if it's a rare find or very cheap, it may be worth it, if it's a common gun for a common price, 'fa-getta-boutit'.
