It's about supply and demand.
The Apple I (which was the one that sold for a boat load of money) is pretty rare. There were only 200 produced.
So - you can sell a non working Apple I for more than a $100,000.
Will an iPod touch be worth money to a collector one day? Most likely - but given the much larger number produced - the collector can demand a perfect iPod touch. New in box - with a box that still looks perfect with no scratches or wear.