Mine has to be the time a shop assistant in a computer shop that will remain nameless tried to sell me a bog standard floppy ribbon cable for £14 ! ( the drive was 9 quid!) Told him he was nuts ! The other one which i unfortunately went though with was an urgently required microphone for video conferencing. I knew I could get one in Argos for £4.99 but they had none in stock so I nipped into a major high street electrical store and found the exact same thing but this time as a Creative badged model for £25.00 ! sick I was but I needed it .