It depends on the damage done to the iPod. If it is an internal processor damage, which is unable to be fixed, then you will probably have to pay for a whole new iPod which runs at about $200.
Cydia costs $9.99 on iPod touch.
£60
The iPod Touch 8gb costs 199$
about £90
350000
$600
$50.00
$259.99
nothing
199.99
About $180.
189.00