I just paid about $5.65 shipped for *each* of my (16)
1Mx4-bit DIPs. I
was honestly happy to find them at that price. Those chips are
exceedingly rare and this is the first time I've found any for sale at a
reasonable price and quantity for the last five years. (and I've been
looking)
They are not SO rare in Brazil. Although uncommon, these can still be
found as pulls.
This was to expand a Microbotics VXL*30 RAM-32, from
2mb to 8mb, which is
an accelerator/ram expansion device for the A500.
I'd adapt some 30-pin SIMMs on that...