So far I don't see anyone coming close to this. A little over a year ago the Q500 was selling for this price. The technology in the ST16 is cutting edge for this industry. The app for the P4 isn't in the same league and is reported to have a lot of glitches by the owners. Other than DJI, I don't see any companies with the R&D capabilities to put something on the market. Gopro pulled the plug on their Karma and 3DR is getting out of the drone business.
If Yuneec had decided to sell the H with an app and you had to provide your own notepad, it probably could chop off $300-400. The ST16 sets it apart from anything I've seen.