HT1349 how much to get my ipod screen fix or replace
How much does it cost to get my smashed ipod fix
Apple will exchange your iPod for a refurbished one for this price. They do not fix yours.
Apple - iPod Repair price
A third-party place like the following maybe less. Google for more.
iPhone Repair, Service & Parts: iPod Touch, iPad, MacBook Pro Screens
Replace the screen yourself
iPod Touch Repair – iFixit