Thumb Score: +20

Amazon [amazon.com] has Pro-LifT Mechanic Creeper for $47.90.
Shipping is free.

amazon.com/dp/B07YBS1GJ9 [amazon.com]

Home Depot [homedepot.com] also has Pro-Lift Mechanic Z Creeper w/ 6 Casters (up to 300-Lbs, Green) on sale for $47.90. Shipping is free.