I'd buy that for a dollar!
I love the 581 (and to a slightly lesser extent the 681, for aesthetic reasons only). To me its a really neat example of the ultimate refinement of the "fighting revolver" while they were still widely relevant. 4" barrel, L frame, .357, fixed sights. Everything you need, nothing you don't.
Only a few years after it's introduction the police market began the switch to autos that is almost complete as of today, and while there have been some debateable improvements (rails, capacity, materials) to revolvers since, they were never enough to gain back their former market share. The 581/681, to me at least, represent the high water mark of the service revolver. Doesn't hurt that they look and function beautifully either.