I finally got my hands on one of these! I picked up Houses of Parliament at Sephora. I chose the purple over the grey because all the grey ones looked like they had already been opened and tried on.
This works great! The magnet is easy to use. There's a little guard so you don't accidentally bump your wet nails against the magnet. Drying time is fast! I tried painting one hand and then going over with the magnet and that did not work. I needed to polish a nail, use the magnet and then do the next one. Worth it though!
I definitely need more magnetic polishes! I hope they are going to become more available. And as they get more popular, I hope the price comes down a little $16.00 is steep (to me) but worth it for something so interesting that works really well!