From my experience, PC components (video cards and RAM especially) associated with a "platform" (i.e., DDR1 to DDR2, AGP to PCI-E) change often seem to go through the following price/supply cycle:
1. New platform release and prices are high due to the "newness" and relatively short supply followed by gradually decreasing prices as more supply comes on-line.
2. Another new platform is released and the "old" gear goes for clearance prices as demand dries up.
3. Production shifts from the previous platform to the new platform and as supply for the old platform starts to dry up the prices increase.
4. As demand for the old platform dries up further, the prices start to fall again until the parts are no longer available.
YMWV cause there's no way of knowing for sure how the price peaks and valleys will turn out or for how long, but it sure does happen.
I didn't say the prices for fast DDR1 RAM will keep falling forever. I said there "should" still be some deals around for the next month or so as the inventory is sold off in preparation of the switch to the new platform (DDR2).
After the "glut" of DDR1 is gone, it will still be available for a couple of years; however, the prices will gradually rise over the short term due to short supply. Where the prices go from there is anyones guess. I suppose sellers believe if your platform "requires" this kind of RAM, you're more likely to pay more for it verses upgrade to a new platform.
I paid ~$207 for this same memory back in Oct/Nov of 05 and it's gone down ~$80 since then. And I'll bet the same memory (or equal) cost ~$300 shortly after it came out ~1-2 years ago. I didn't pay "peak" price, but I didn't catch the bottom either. I needed the RAM so I bought it at a reasonable price (at the time).
I think in 6-9 months, this RAM will likely cost $160 or more (i.e., the supply dries up and the sellers believe peeps who need more RAM will pay more rather than do a platform switch which will cost a LOT more). It's not a "perfect" theory, but it works for me most of the time when buying PC parts. Wish I could do as well timing the stock market