price is per nail. if you sell like 5 nails a second at a 0.10 price, you get 0.5 a second.
That was the strange thing. I set 0.5 as price. But funds raise in smaller steps. For example from 27.04 to 27.32.
Only thing I could explain this with is if there is one sale every 5 seconds and the 0.5 are split in 5 updates, one each second.