It's not a shop, it's like Craigslist if I've got the name right. People that just want to get rid of their animals for one reason or another.
I'm not alarmed & already fear the worse but I won't give in before even seeing her & if I'm taking the other 2 to the vet anyway then I may as well take the poorly one even if it is in the end put down. It can't be good for the frogs mind being poorly & now having no friends. Maybe I'm humanising it too much. Thanks for being honest about what probably will happen thou.