Of course, it's silly when people expect you to price match. The concept
is about identical items, so if you were going to buy that calculator at
Store A, but see it at Store B for a lower price, Store A would rather
lose the slight difference than lose the sale completely, so they'll price
match.
It can't apply to things unless they are identical, because a vague "this
calculator is sort of like taht calculator" doesn't mean it is the same
one, and if it's different, the price can be different. SOmething you
make can't be matched, because nobody else is making it. Even a 'sort of
like this" cant' qualify, since you have no idea of the other person's
costs and such.
Of course, some stores seem to latch onto this, I gather buying products
that aren't quite the same as sold to other stores, so not only is it not
so easy to compare, but they can get out of price matching since "well
this calculator isn't exactly like that one".
Michael