As a photo store owner, I will politely disagree that Pan F doesn't have a market. We sell quite a lot of it (not, say, at the level of HP5, but enough that I certainly wouldn't want to run out of it). We find that it takes a bit of prodding to get people out of their comfort zone (again, HP5 and the like), but after they try something like Pan F, they're usually back for more.

Just my two cents.

Andrew Toews