RAM prices do go up after crashing. Its like the stock market, just a lot more volatile. If you don't believe me, you can check out some of the archived weekly/monthly price guides here on AT. I remember my first DDR board, the 8KHA+ back in October 2001. Picked up 2 x 256MB Crucial PC2100 when it dropped to rock bottom prices @$28 a stick. A month later, the same stick was $80+. Prices dropped again around this time last year, then quickly skyrocketed again. They've dropped considerably in the last month or so.
There's a lot of factors that control the price of DRAM, with the most obvious being supply/demand, but also the release of new technologies has a large impact on the market. I remember the price hike in 2001 was the announcement of many major players exiting the DRAM market in favor of the flash market. Later, when Intel adopted DDR b/c of all the RDRAM pricing issues, prices skyrocketed again. I expect a similar increase in the near-future. The FTC's ruling against Hynix effectively bars them from supplying US Firms with their modules; This'll increase supply in the rest of the world, but it'll leave US suppliers scrambling for replacements, which'll drive up RAM prices in the meantime. Couple that with Intel's impending launch of Springdale and Canterwood, and you should see RAM prices increase again, particularly for PC3200 and higher.
Chiz