A bit steep still for something that only gives MPG and price of fuel. From the description I think is missing the following which the Scangauge 2 has:

- Inlet Air (air going into the engine via the filter)

- Voltage metre to tell you what the battery and alternator are doing when the engine has started

- Rev counter (if you want that sort of thing)

- Speed-o-metre

- Code reader and reset so you know what the error code is if the ECU light comes on

And a few other things I can't remember at the moment.

Also the Scangauge allows for 4 gauges to be displayed at once, where as the one you have posted only shows one reading. As well changing the LED light to match the dash;

Scangauge underneath the Kenwood DVD multimedia system.

ANother one of My Scooby, again underneath the stereo system and lit green to match the dash lights;

Still think the Scanguage is a good investment. Luckily I have one on my other car which has an intelligent Alternator (only charges the battery when it detects a drop in charge whilst driving). With the Scangauge 2 Voltage metre noticed the Alternator wasn't charging the battery and saved me a break down. And also a fire under the bonnet as the live wire was being melted away due to a short from the regulator