It's the economy. They don't just go up to 500m over the night. No one can really answer that question.
I hope for your sake that you are joking.
One, they did go up to 500m over night.
Two, the store price rose to 500m.
Three, the economy doesn't control the store price.
Four, don't post on these topics if you don't know the answer and are just trying to gain postcount.