Suggestion: Create a possibility to buy multiple items. Buying 500 Smileprin by clicking 500 times (and scrolling down every 3rd time) is really annoying.

If this is too much hbumle, at least insert the overview of recently bought items below the “shop-window” so the need to follow the items by scrolling down is gone.

p.s. sorry if this was already suggested, but i was too lazy to see through all other suggestions.