no it doesnt work like that
its supply vs demand

the price of ddr2 dropping has nothing to do with ddr3.

ddr3 production few.. therefore expensive
ddr2.. go china.. a lot.. so cheaper
ddr... less so more expensive than ddr2.

chances are enthusiast would wait till better latency rams comes out on ddr3..
took like 3 years before a cl3 ddr2 800 came out..kekeke..

hahah dont worry bro.. most ppl actually shifted to ddr2 only like end of last year and beginning of this year.. majority of the gila gamers..

still remembered i had a corsair value ram 667 2gb already like nearly 3 years ago and it wasnt popular at all.. with the p4d.