The listing has expired so I can't look at it but from the responses, it sounds like it was worth the money!
What's wrong with welding cases? You start off with base material that's cast into a certain shape. Something comes apart and causes that casting to no longer be the correct shape.... tig welding involves heating the material until it becomes a liquid and then adding new aluminum in to fill in any holes until the case is solid aluminum again. While it may not be as desirable (the stigma around repaired cases is fierce), done right it's equally as strong, sealed, and runable as an original set of cases.
I tell you this much, clean unbroken unrepaired cases from a 20+ year old quad (1992-2012) are getting quite hard to find and are EXPENSIVE when they do come along. A proper repair can save those ancient cases from the scrap heap....
I am not the only person who can repair cases. You can search around locally and find a decent welder who's willing to take some time and trouble and weld those cases. Most production welding shops won't mess with cast aluminum because it's more trouble than new stuff but occasionally you'll find someone who's willing.