This is a niche product for those that always wanted a power meter but couldn't justify the cost. Its a terrific deal. This is the cheapest price I have ever seen on the 4iiii Precision power meter. Its the cheapest price I have ever seen on ANY power meter from a major brand. It is a left side only power meter so if you are a pro team rider it just won't do but for normal mortals it is an excellent choice. In many ways absolute accuracy is a pipe dream and repeatability is more important. Review by the guru Ray Maker (DCRainmaker):
4iiii have a new meter in the pipeline ( though it seems to be endlessly delayed). I think the new one has a rechargeable battery but uses the same strain gauge technology. Personally I prefer a meter with the 2032 coin batteries which can last up to a year and are cheap and widely available.
This product is not available through the Australian web page. You must use the .com web page. If your browser keeps diverting you to the .com.au site try opening it in a private or incognito window. Probikekit are based in the UK and are reliable with reasonably fast shipping.