> I know this isn't really the point of your post, but a simple solution to this particular situation (which no doubt has the potential to repeat itself with other customers) is to put up a notepad designated for testing next to the pens. Many book and paper stores around here does that, and that greatly reduces "graffiti" on undesireable areas, such as the shelf fronts and price tags.
>
> Trav"usually tests pens before buying"holt

Except that, by writing with the pen, the customer commits the same crime as by writing on the notepad. Neither belongs to him and therefore he has no right to use either before he's purchased it. Any opening of packages, testing out of product, etc., without the express permission of the management is defacing of private property, and it's illegal.

Problem is, everyone's so concerned with "making the customer happy" and "the customer is always right" that they get walked right over, and customers start to think they can get away with whatever they want.

~Mina "If I ran the world..." moon