the answer to the topic (disregarding the fact that it was actualy a yen increase not drop in value) is: no, it only works the other way around: you pay more when the yen goes up, you get the privilege to pay the same when it goes down (no increase). yes, this is "tongue in cheek"
now for the other part: will people stop mentioning pentax being the last to increase prices, quoting the yen fluctuations and "economic dowturn"? i think that's what is technically called "a strawman". we've been through this before: in the case of pentax lenses, it can only be strategy or pure madness (or perhaps pure madness with dreams of being strategy), and, if you were to "believe" this "economic downturn" "story", at the wrong time, too. pentax lenses are now more expensive than any other equivalents, except maybe nikon here and there (and nikon have a long standing reputation for that, which they must defend
), they are also definetly much more expensive than when they were first introduced (including the most recent ones, like the 60-250/4). finally, if you still think i'm just ranting, try to convert the current european price for a premium pentax lens in yen, at the current rate, and the original price (or a price you can remember, the price you bought it for when it was still "cheap", whatever) at the rate of the time when that price was valid, i assure it is still considerably more expensive even in yen, so no, it's not (just) the exchange rate.
i am really fond of pentax, but facts are facts: this is simply too much. if we're going to try and justify it for them, please at least find something good, something i'll have to work hard to dismiss. this is... old