I have a pair of 1.1 Albino Pieds right now that were born on 9/20 and I STILL have to assist feed them to this day. I have decided they just hate me and that is why they do this to me..... As far as that Pied at PetSmart goes, I'm very surprised that such a large chain has a Pied. $300 is about the going rate for a Pied male with that percentage of white though. Medium white Pied males are $300-$350 and females are roughly $100 more. They really dropped in price this year. I'd offer the manager $200 for him as is and see if he goes for it. You can clear mites up in a day if you know what you're doing.
Anyways, I'm glad you finally got your little guy/gal to eat. Glad the hair dryer trick worked for you. It's my go to method for stubborn eaters
Cheers!