"players have so far paid to remove nearly 14 million cubelets, while adding an extra 4.7 million."

Wow I almost spit out my tea when reading that while wrongly assuming each block was $0.99

Then I followed the link in page and discovered that the $6.99 point is for 100,000 units.

So figure ~200 of those sold or about $1000 after App Store fees.

I can now sleep tonight.