iBroke my iPod

Don’t you hate it when something suddenly stops working and you have no idea why? It’s arse-slappingly infuriating. My iPod Touch now has a broken ‘Home’ button, which means I have to push the button down so hard to get it to work that I can actually feel my thumb slowly breaking with each attempt. What annoys me more is that I know Apple will charge me (too much) if I send it off for repairs. So; do I buy a new iPod, or a finger cast?