Please bare with me, this might turn into a bit of a waffle, but I'll get to my question... I promise!
I've just been looking at our CPC traffic for April and 2 search terms jumped out at me. I recognised them from previous keyword research because they are search terms that I expected to be high traffic (from past experience), but Google Adwords keyword tools showed them to have no potential traffic, and next to no potential traffic (literally 0 local searches and 12 local searches per month).
Last month search term A had 46 visits, with 19:25 average time on site and 8.70% bounce rate and search term B had 10 visits with 14:47 average time on site and 0% bounce rate. For very boring reasons we are not currently able to measure conversions on these terms since (they are related to consumer finance and when a customer applies for finance it is all done on our finance providers website) but despite the low volume, these are pretty good figures for on site behaviour and so it got me thinking...
Is there a more accurate tool to estimate traffic volume that we should be using rather than the Adwords tools?
I appreciate that the estimates are probably made based on historic search behaviour and April's traffic could just be a one off, but these particular terms used to be insanely popular 4-5 years ago when I worked at a competing company.