SCS Direct via Amazon offers the Swonder Full Face Snorkel Mask in several colors and sizes (Aqua pictured) with prices starting at $32.99. Coupon code "SWD25DND" drops that starting price to $24.74. With free shipping, that's at least $8 and the lowest price we could find. It features a 180° panoramic view, anti-fog system, and action camera mount.