Yes, it has gone up. I bought the same memory awhile back for $52.99 w/ free shipping.
Bryan
Memory is a commodity so it depends on whatever the price levels are in Asia (it's a supply/demand thing). You'll always see prices fluctuate, but what I'm planning on doing is sticking with my 4GB of RAM until the prices return to say, July or August levels and then I'll do the DIY upgrade to 8 GB. I can go to 12 or 16 in 2010 or 2011.