BuildASign offers its 3x6-Foot Personalized Vinyl Banner for $38.21. Coupon code "19GRADBANNER" drops it to $19. (Apply this coupon in-cart after customizing your design.) With free shipping, that's $19 off list and the lowest total price we could find, although we saw one of the same size for $5 less a year ago. They offer numerous templates and the option to design your own from scratch. Deal ends April 22.