*sighs*
No, I did listen to Aerbabe - I almost always do, because she knows more than me in most things - but that post complaining against the lack of try-before-you-buy was actually posted a few days ago - I just posted it accidentally to the "nav book" thread due to a sudden loss of situational awareness
So I copied it over to here, though I probably should have just deleted it since it wasn't relevant anymore. D'Oh