Did you ever update this? Both the web version and the download version? Currently, I have a prestige boost of 892%, and "wood shelves" turns red if I charge more then 10, even when my quality is at 70 and rate at 16. That is significantly down from when I was able to charge 490-ish for the same quality and rate but a prestige of only 120%. If I charge more, my (unsold) "stock" starts to increase rapidly.