Hi Chilloh,
Yeah, for the price vs performance, it just isn't worth getting DDR3 right now. My guess is to give it around a year or so before prices get reasonable. I would check out the DDR2 1600 MHz sticks. They have some reasonable prices.
If you are thinking of getting a new motherboard, see if it will support both DDR3 and DDR2 for future upgrades. You may have to find the DDR3 boards online.
Shawn