Because it is such a hard, sturdy glass (and some of the other properties above) make it ideal for things such as bakeware, large items, and sculptural, multi-piece things. (Can we say wine glasses, wine corkers, etc?)To give some perspective, this vase-thing on a stand is 7.75" tall. The flower hits 4.5" tall.
Now, these two items I can't sell at all - they both developed some hairline cracks in their assembly/final cooling so their structural intregredity isn't the best. However, they're quite pretty to look at, and are a fun preview for the types of things that could be done with this material. :)
Oh, did I mention the colors?? Boro has such a larger range of colors and color effects that you can get with it than soft glass, it's just amazing and fun to play with. Take a look at the root-like base of this flower - that's all one color of glass, and it just happened to hit all those various colors.