Im looking for my speedo and other gauges where is the cheapest place to get them as funds are low and also whats the score with push bike speedo?

i have just fitted one of these looks very cool
http://www.acewell-meter.com/
Rescued attachment 40600009.JPG

Hi,could you please enlarge your pic as its difficult to see much detail !!!!!!!!!

where di you get ity form and how much? also did it pass its sva and how easy or hard is it to set up?