How much does this cost to the nearest dollar?

The Surf Cushion, Added Seat Cushion for The Surf Portable Lap Desk, Padded Foam Support for Flexible Seating, Grey (Surf Desk Sold Separately)
COMFORTABLE WORK COMPANION A comfy cushion that is designed to fit your favorite portable work desk, The Surf by sold separately)SUPPORTIVE SEAT The Surf Cushion offers 1.5 of soft but firm foam support to create a comfortable place to sit, no matter where you choose to work with your portable Surf Desk WORK ON THE GO Pair with The Surf Desk to make it an ideal flexible seating alternative to chairs in homeschool and classroom environments and offices; use for writing, with a laptop, snacking, and other activities NO ASSEMBLY REQUIRED Built-in non-slip sleeve is designed to fit onto any

Price is $80.00
Price: $80.42