OMG! Seriously? What kind of stupid logic is that? If you use this line with your business, prepare for the shit storm that will come to your way. I'll report you to the BBB, file a law suit against you and pre up a class action law suit to rape you into bankruptcy and make sure no one will ever do business with you again.
You agree to a contact and now you want to back out of it. Yes, people break contacts all the time but be prepare for a shit storm that will rip you apart.
Bro, c'mon now. I hate using this argument, but if you promise your users a free upgrade and you break that promise. WHO THE FUCK WILL EVER TRUST YOU AGAIN? That's a lame excuse! Don't promise something that you can't keep. That just reflect badly on the company/developer. This is not about the money. It's about the integrity of a company.
I find it depressing that if I pay for something with the promise of free upgrade and it wasn't. There are people like you who will jump out from the wood to defend it. Don't make any promise if you can't keep.
You agree to a contact and now you want to back out of it. Yes, people break contacts all the time but be prepare for a shit storm that will rip you apart.