I have an extra sheet from my recent DIY roof vinyl that i’d be willing to sell. It’s a 55"x72" sheet of high performance, durable, UV Resistant , cast vinyl.
You just need a squirt bottle of soapy water, squeegie, and a hair dryer/heat gun to apply.
Usually sells for about $30/yard and most vinyl shops don’t carry this width needed to span a roof.
$50 takes it.