hey shim,
i just checked pricewatch.com and turns out that there are only about 5 vendors that have the duron 600. ranging from about $41-$54.
i'am not sure though how good those vendors are, may want to check resellerrating.com first to see the reviews the vindors got.
here are the sites just in case,
hope this helps,
also, how were you able to OC your t-bird 1.0 ghz to 1.4ghz. i was only able to get mine up to about 1.3 ghz but certain apps were crashing.
could you possibly tell me what your settings were like cpu clock,multiplier, and vcore setting
appreciate it