Try calling your local sign shop and see if they have any, or you could try calling
Ameriban- they've locations all over the country and have okay prices on adhesive vinyl.
I usually buy 3M high performance 48" wide rolls in 50yard lengths for about $500, but you should be able to find a cheap intermediate vinyl. Most places have 15", 30" and 48" rolls in 10yard and 50yard lengths.
Make sure you ask for
matte red, a high gloss vinyl would look terrible.