Does that include the seamer? $6k for both would be a good deal if they're in reasonable condition.
Actually, the seamer is all you really need. You could fill the cans by hand and then seam them, just like you would with a bottle.
With two operators, when everything is humming, that Cask filler/seamer system can do about 1 bbl/hr, which strikes me as a little excessive for home brewing.