I was just looking around the clutter on my desk, and i saw an item that i bought back in 2002, that works just as well as it did when new, and yet has a monetary value (based on replacement cost) that is a tiny fraction of what i paid.
It is a Compact Flash card for a digital camera. I purchased it at the same time that i bought my first digital camera. The card was one of the top-of-the-line models, a 512Mb Lexar Professional 24X CF Card with Write Acceleration.
$329.95 (i still have the receipt)
They don’t even seem to make 512Mb cards anymore, but you can now quite easily find a 1Gb card for under $10.
So, what item of your has depreciated the most? I’m most interested in items that still work as they were intended. I don’t care so much about stuff that it broken on otherwise non-functional.