iMax81 via eBay offers this Large Temporary Removable Waterproof Tattoo in five styles (HB-049 pictured) for 99 cents with free shipping. That's tied with last week's mention and $2 under the lowest total price we could find for a similar temporary tattoo, excluding other eBay vendors. Each one measures about 8x6".

Of note, this item ships from China and may take up to eight weeks to arrive.