Walmart offers the Nostalgia Electronics Movie Time Popcorn Maker, model no. OFP-501, for $15. Choose Site-to-Store pickup to dodge the $4.97 shipping fee. (Amazon sells it for the same price via Prime.) That's tied with last week's mention as the lowest price we've seen. (It's also a current price low by $18.) It features vintage popcorn cart styling and uses hot air to pop up to 3.5 oz. of kernels.