Everyone has a little secret that we don't tell people.... But we thought it was time to admit ours.
We use microwave kilns for rapid prototyping, or just to see how glass is going to react with other pieces.
They are a handy additional tool, and we have decided to bring in a large amount to make them readily avaliable within Australia, at a reasonable price. We don't recommend using them for production work (where a digital kiln is best as they offer greater temperature control, greater production capabilities and controlled annealing) but we find ours useful, and we think you will too.
They are also an excellent low cost entry point to try fusing on for size.