Make sure u download the new i tunes 1st
then, yes its really easy !
Cost is £12.99 for the app's.
You simply accept the 1.1.3 update then you are asked if you want the upgrade fpr the app's. Confirm and it takes you to i tunes store and account where you confirm your password and confirm.
The updates/upgrades take a little time.
Make sure you have sync'd your i pod touch and then after the updating has finished eject the ipod touch. Check and hey presto you have the app's.
Now many have said why should i pay for this.
Make your own mind up on this one but I would support getting them or keep the machone to 1.1.1 or 1.1.2 and jailbreak > Your choice in the end.