Yours has got to be the worst/most extreme case of HPFP I've read about. I've NEVER heard that the HPFPs were only good for 60K miles either, and that doesn't make any sense otherwise Ford would have been paying out the ying-yang to replace those on trucks that were under warranty. Something's definitely not adding up, except your repair costs and that's just completely unacceptable. You didn't mention if your truck is modified but after the second one failed I would have been on the phone to Ford Corporate in a heartbeat.
I wouldn't blame you in the least for moving on either. That's an unbelievable amount of money to "maintain" your truck. Something is most definitely up...