Each bid is for ONE display case containing a piece of the Tatahouine diogenite meteorite. The 1977 Star Wars movie was filmed in the same location that these meteorites were found. These are not sold by weight, but as micromounts. However just to give an idea we did weigh some of the pieces and they average 0.25 to 0.3g each, some more some less. 

Images show typical specimens like the one you will receive.