Aha well I was still into DDR when that happened. Back when I had that acer with DDR ram... and DDR2 was comin out... then I only saw 4200 then 5300, completely skipped 3200.
Also I'm afraid its not worth much... you can pick up a much faster stick of 1GB PC2 5300 brand new for like 20 bucks these days... now consider its almost half the speed and 4 times less memory.
Definitely not worth more then 5-10 dollars IMHO
The 2700 might be worth more like 10-12 dollars