I am glad that it is still the same in US dollars. I don't mind spending some money on this game every once in a while. But if the prices go up too much, it isn't worth it for me anymore.
I think they'll remain around the same price, it's their most popular sale and will most likely remain so unless they come up with a better deal. I believe the 4 pack promo was more expensive but ultimately worth it in the end because it wasn't too much of a raise. As long as Konami is dealing in USD, their prices should remain the same for that currency.
Oh, yep...I had a profile error, now I see the 59. It's the exchange rate, it's almost up to 20 MXN : 1 USD, it was pretty cheap a while back, I guess Konami respected the price as long as they could.