One of the less-publicized aspects of the Windows Vista launch was the Vista Family Discount Program, where if you were an owner of Windows Vista Ultimate, you could buy up to two licenses for Windows Home Premium for just $50 each, a massive price break versus full retail price.  The program aimed to encourage households with multiple PCs to be early-adopters and move to Vista in the first few months after launch.  A great deal really if you were looking to jump on the bandwagon early, or even if you just wanted an extra license or two "just in case."

Well, if you were thinking about taking the plunge and getting a few cheap Home Premium licenses, you're almost out of time.  The discount program ends at 11:59pm PST on June 30th.  After that everything jumps back up to full price.