I was approached by my local borough about making traffic signs. Where's the best place to buy blanks and reflective vinyl? Grimco wants 2x (plus) what they're currently paying for a finished sign - just for the raw blanks. Obviously, their current supplier is only paying a fraction of that for raw materials. (The place they're getting them from now is either a two hour drive round trip, or they pay big $$$ for shipping. If I can just get close to what they're paying now the job is mine since I'm obviously local). Any help would be appreciated.