Mr. and Mrs. Potato Head, $5.00 each, and more

Amazon has got both Playskool Mr. Potato Head and Mrs. Potato Head for $5.00 each.  These are "Add On" items, which means that they ship for free for Prime members with a total order of $25 or more (and they count towards that $25).  At $5.00, these Potato Head toys are at half of where most other Potato Head versions are currently priced.
If you like your potatoes a bit spicier there is always the very frightening

Darth Tater, for $9.88 with free Prime/SuperSaver shipping.  Or there's the heroic

Amazing Spider Spud for $9.28 with free Prime/SuperSaver shipping.  

By the way, while kids love Mr. Potato Head toys, these also make awesome gifts for adults (who never stopped being kids).