At that price it's a great bargain. Given the substantial saving I'd be tempted to get it serviced and sorted by a reputable specialist, unless you really know what you're doing. That way you should have a 'baseline' to start from as they will have all the tools and software to sort it out properly ...

At the risk of stating the blindingly obvious, it's cheap for a reason. You may sort it for peanuts and get the deal of the decade, or buy a total lemon. I guess that at that price you could always break it up to recover most of your outlay, should you realise early on that it's going to be a money ...

I think there's a couple on ebay.

Multigatto is the authority on these things, but AFAIK if you don't have a red key you can't change the dash.

There are +s and -s to all of them, but my instinct goes for the first one, although a new dash is not cheap. There is a chap on this forum called Multigatto, who is based in Italy, who occasionally has dashes for sale. The Corbin seat could be worth it too. At first glance I'd say you could get ...

If you search the Forum you'll find Gregski (I think) had designed one that I think got a bit beyond prototype stage, but it then stalled. I'm sure if you did get to fabrication stage at a reasonable price orders would ensue.

They're made of unobtainium and are delivered by angels on unicorns. Good luck!

#2 also has a tank bag and hand guards, so it's ready to tour. If you don't tour, forget it, but if you do there's a lot of expensive accessories there; it may even have heated grips. I can see what look like a few carbon bits too, so money's been spent on it.

Mileage is only one of the parameters ...

These aren't too bad. I've got them on my bike. A touch fragile but they don't shake and are cheap:

http://www.amazon.co.uk/Motorcycle-Motorbike-Integrated-Mirrors-Indicators/dp/B00MPJWMVY/ref=sr_1_8?s=automotive&ie=UTF8&qid=1425824936&sr=1-8&keywords=Alchemy+Parts+Ltd

Note: I got mine elsewhere ...