Im with Dave, a wideband isn't as useful to anyone unless it's logged right next to other data, like RPM. In which case the gauge might be cool but not necessary. Go with a cheap PLX SM-AFR or Innovate LC-1 and a powerlogger. Just my .02.
I suppose, "good price" would be kind of nebulous. I should have said, "I can pick one up CHEAP" ! One mo' time- Does anyone have any experience with the F.A.S.T. AFR unit?