I can't tell you where to get it, all I can say is that I'm not a fan of it.
Round cages are not recommended because birds don't have a 'corner' to hide in. They can also be hard to place perches, dishes and toys in due to the 'limited' amount of space inside of them. I'm also not a fan of the 'curly cue' design as this creates larger holes that a ligament or head cold potentially get stuck in... not to mention the "V" shaped wires.
At only 28" diameter, this is a relatively small cage for a large parrot... so again, I don't like it.
If it works, here's the images for others to view (may have to copy and paste)
http://i.ebayimg.com/t/Large-Bird-Cage-/00/s/MTAyNFg1Nzc=/$T2eC16ZHJGYE9noojc(oBQ3i43WeEg~~60_57.JPG
http://i.ebayimg.com/t/Large-Bird-Cage-/00/s/MTAyNFg1Nzc=/$T2eC16dHJG8E9nyfpmzJBQ3i4ykrQ!~~60_57.JPG
http://i.ebayimg.com/t/Large-Bird-Cage-/00/s/MTAyNFg1Nzc=/$(KGrHqVHJFIFC-8UmCImBQ3i49epWQ~~60_57.JPG
http://i.ebayimg.com/t/Large-Bird-Cage-/00/s/MTAyNFg1Nzc=/$(KGrHqVHJEoFDOLn43(IBQ3i5Bb58w~~60_57.JPG
http://i.ebayimg.com/t/Large-Bird-Cage-/00/s/MTAyNFg1Nzc=/$(KGrHqFHJEwFDU-u4J2LBQ3i5FEp3w~~60_14.JPG