It looks like a terrific deal! I bought mine on eBay about a year ago, no problems except a musty smell in the case. But I can live with that.
You can get cases on eBay, either new or vintage. And, you can find almost any part you need on eBay as well. A word of caution, though. I bought some new "featherweight" bobbins that don't work. They are slightly too thick and break the bobbin thread. So, if you need more bobbins, try to find vintage ones.