What condition is the Too in?
Does the Too pluck itself?
Does s/he scream at the marketplace?
Can you see the Too's breastbones?
What about feather condition?
Beak condition?

If you have a bad report about any of the above questions, the bird is most likely being severely neglected. If the bird is not exhibiting any of the above maladies, then you really can't take him (or her) from the owners. The SPCA can only give a slight shove if the animal is being emotionally neglected. As long as the animal is not physically neglected, the SPCA can usually not step in. My suggestion is to go back to the marketplace, and get some hard proof. Take one of those Kodak camera whatchamacallits where the photo comes out about 30 seconds after the picture is taken. That way, nobody can suspect Photoshopping or other tinkering with the pictures. If you have a digital camera, I'd also suggest taking short videos of the owners abusing the bird. I really wish you luck! Poor Toos can live for 80 years. I would hate to be living 80 years in those conditions