For in-store pickup only, Micro Center offers the Raspberry Pi Zero v1.3 Single Board Computer for 99 cents. That's tied with last month's mention (which was only in NYC-area stores) and by far the cheapest "computer" we've ever seen. (It's a savings of $4 off list price, although most stores charge closer to $10 once shipping is factored in.) This update to the Raspberry Pi Zero adds a camera connector; other features include a 1GHz single-core processor, 512MB of RAM, and microSD card slot.
Note: A limit of one per customer applies.