I recently bought and fitted one a couple of months ago. Price was £128 with the fazer logo. Don't know what you think of that price? but if you're going to look at a gear indicator there over £70 just for that and the multi gauge does so much more. fuel, water temp, volts, outside temp drag modes(time your speed, revs gear change points) plus more.
A good handy man(biker mate) who can solder a few wires would be able to do it. It is easy to do. The instructions are excellent and straight forward.
Cheers Minty,
Price-wise I'd been looking to get the Acumen DG8 anyway. I don't do soldering either, so with the plug and play loom coming in at an additional £30, like you say, the cost isn't that much different for SO much more.
I'd rather have someone fit it who's done this exact thing before. I'm in Crewe, Cheshire, and prepared to travel up to a couple of hours or so if any of you fine Foccers would like to take it on (for a mutually beneficial sum of GBP), then let me know (this includes you Minty, I'll take a no-reply as an ever so polite refusal)