Smaller drives don't seem to have enough value to
be marketable anymore.
The scrap place I was at the other day was sorting drives, all tested bad
from some rma type place, and anything smaller than 3 GB was going in a
gaylord (heavy corrigated paper box that just fits on a pallet). It was
almost completely filled by the end of the day, and that is one heck of a
lot of drives, a rough guess is about 4,000, so it must have weighed more
than a ton.
You can find 5.25 FH scsi 47GB Seagate for $19.99 here NEW
http://www.surpluscomputers.com/h_hd_ST446442W.html
So the smaller drives must have no value at all except for collectors who
want a stock drive in their machine.