This is the sort of thing that gets me into trouble.
Newegg has a 1.5 TB drive for 75 bucks (with a promotional code; you have to get the company's emails for this deal, but if you're going to be in the market for electronics equipment, especially computer equipment, you should be signed up for the emails anyway).
I don't have an immediate need for another hard drive. But this seems like a decent deal.
Do you ever find yourself tempted to buy something you don't need, just because it's such a good deal and you know you might eventually need it?