
I've been looking at the various consumer-grade plug-in energy meters that are on the market, in case we decide to buy one for our own experiments. I thought that the results of my search might be of interest to some readers of this blog, so here they are, in Excel format:
http://blogs.picotech.com/media/users/jeff/plug-in-energy-meters.xls
This spreadsheet contains some supplier names, prices and specifications in addition to the information in the picture above. I don't recommend that you make your final decision based on this data, but at least it will save you from having to work out how many different models there are and who makes them.
Disclaimer: I don't guarantee that the prices and specifications in this spreadsheet are accurate, up to date, or the lowest available. This is an indicative survey only, and not an endorsement of any product or supplier.