Minecraft has grossed $77 million to date

Minecraft's numbers:

Version	Units sold	Price	Total
Alpha	800,000	9.95 €	$11,014,252
Beta	3,200,000	14.95 €	$66,196,208
Total	4,000,000		$77,210,460

Sources: Minecraft Draws Over $33 Million In Revenue From 1.8M Paying Customers and Minecraft Reaches 4M Sales.