As one of its daily deals, Yugster offers the Kogeto Dot 360° Video Lens for iPhone 4/4S in Green for $19.97. Coupon code "FreeYugBuck" drops it to $18.97. With $3 for shipping, that's $6 under our mention from two weeks ago and the lowest total price we could find in any color now by $6. It works with Kogeto's free app Looker for iPhone to capture panoramic video. Deal ends May 30 at 6 am ET.