"elicit blank looks for those who enquire about them at their local mobile phone stores"
IMO, you get the same 'blank' look from the spotty yoof therein when you enquire about *anything*. Also, this isn't restricted to mobile phone shops, either :-)
My last visit to a 'real' mobile phone shop was only on impulse as I was walking right past it with my rather knackered mobe handy... I got so disappointed with the service from and product knowledge of the staff, especially the constant and obvious efforts to 'upsell' me into their own walled garden, that I've decided not to bother with any of their ilk in the future.