on page 4, I don't think that's exactly how math works there.
If you're multiplying the amount for 1 GRS by the drop chance, which is 10,000 E and 10%(decimal form=0.1), that value becomes 1000, not 100,000, otherwise the higher the drop chance is the greater the resulting price is which doesn't make sense.
(let's say the coin has a drop chance off 100%, multiplying that by the GRS price becomes 1,000,000 E, and if the drop chance was 1%, the resulting price would stay at 10,000 E, which shouldn't it be that the rarer the coin's drop chance is the higher the price???)
Instead, if that 10,000 E was divided by 10%, then it would result in 100,000 E.
Those numbers kinda bugged me so....