In my experience, we haven't really seen much, if any, Wall-E merchandise at WDW in the past few years.
But, if you are looking for Wall-E merchandise in general, my 8 year old convinced her father that she need to give me this Wall-E for Christmas and he is fabulous:
He makes all sorts of sounds, dances, moves his eyes, moves all directions, and you can even custom program him to do specific movement sequences. I'm pretty sure I have played with my present more than DD has.
I know they have a Wall-E/EVE pin set and plus he's for both. My son got the WallE plush in 2011 and it's still in decent shape despite being THE lovey. And so I have checked for it every time we go back in case I need a replacement.