An A1050 256K RAM expansion cartridge is priced at $575.
Yup and i thought I was getting a bargain when I bought my A501 (512K for A500) for $150.
That's how the computer industry is. I remember 10Meg HDs for the C64 being advertised for ~$2000. A buddy of mine says he remembers Apple advertising from the late 70's for a 1Meg HD for the Apple II for a "bargain" $12000 :-o