I know exactly what you mean. We have quite a laugh at the ads in our local paper. Here's a couple:-
"Computer, Pentium 75mhz, 64mb ram, 20gb HDD, 15in monitor, CD reader, stereo speakers." How much do they want? £200
"IBM thinkpad. Pentium 2, 366mhz. 128ram, 6gig HDD, 13" screen, 56k modem, external floppy drive." they want £375 for this one.