Well obviously this isn't for everyone but if you can convince yourself to shell out the money for it you will be very satisfied with its built quality. You get a bunch of ports and it essentially transforms your surface pro into a mini surface studio.
The usual going price is ~$550 and I think this is the cheapest I have personally seen. If you have thought about getting it then this is a good time.
P.S. Looks like it is also available at Officeworks for $599, so you can save another $20~ bucks there with price match.
There are much cheaper alternatives.