I purchased a plastic bag mixed with new and used 5 1/4 floppy diskettes and inside the middle was one of the famous "Fileware" or Twiggy diskettes with it's sleeve used with the Lisa I. I could not believe my luck as I had just watched one of these go for almost $50 dollars on eBay for just one diskette awhile back. Now I just need to find a twiggy drive or better yet a Lisa I. :-) Yes I went back to the thrift store looking for more disk but no luck. The cost of the package was $1.40 for about 20 diskettes.