These don't seem to be in production anymore but I've seen so many amazing ones online that my son would just love but you can't buy anymore. I don't suppose any mumsnetters have some they would be willing to sell on to me? I've ordered some Chinese knock offs but I'm not convinced they'll be any good.
Am not ready to part with ours yet I'm afraid, but just wondered - have u tried ebay? We got our preloved one from there - he transforms - he tucks away into a box or his head arms & tracks pop out. My kids really like him.
Looks like there's a couple of robotic ones on there at the moment too. Also last year lego did a wall-e set which you might pick up on ebay/lego fb groups, and I was in the disney store yesterday & they had both wall-e and eve plush toys. Hope that gives u a starting point. Its a lovely film!