I once found my absolute DREAM betta at PetCo. He was everything I wanted and looking all over AquaBid for. So imagine how excited I was to only be paying $15!
I snatch him up, he turns, and he has the worse fungal infection I've ever seen. It had eaten his flesh,even. Scales gone, a huge chunk of flesh gone, fungus everywhere.
I wanted to give him a chance, and I know the workers well, so I asked about free/discount. Largest they could've given me was 20% off. :-/ So they put him in the back for treatment and wrote down my phone number. If he got better, they'd call, and he'd be mine.
He died the day after.