Please be aware when buying ipods that are listed as broken or for repair.
I have had two 20gb Ipods and neither one could be repaired, they both showed the file and exclaimation mark but when you follow the links on APPLE's website to re-format, the ipod will be recognised by the updater, but when you start the restore proccess you may get a disk write failure message. If this is the case these cannot easily be fixed and must be sent to a repair outlet, or back to APPLE! re-formatting them via Windows will not fix it either!
I would also think this is the same for the sad Ipod and exclamation mark!
Please check with sellers that this is not the case and if you are not sure or cant get answers do not bid!