iMovie Refund

[bluenoise]

All of those analogies are garbage

If I buy a PS3 + Games at Best Buy and I decide to return the PS3, I can also bring back the games and they will take them back.

It depends on the store's policy. Many stores do not allow refunds on opened games.

...
The best thing is to plead the case to Apple for a refund based on the premise that you bought it with the intention of keeping the iPhone 4 - but you realize that you suffer too much from the reception issue and you are returning it. You would love to use iMovie on your touch or 3GS - but it doesn't work on that. Please issue me a refund.

This is the correct answer, as has been mentioned several times already. I bet the OP will get a refund if he is polite and civil and explains his predicament as samcraig did here.