yea, value bond is pretty much identical to dibond, but much cheaper, $50 for 1/8" 4x8 and $90 for a 1/4" 4x8.
1/4" valubond sandwiching the MDO, the ovals are double thickness, all cut at once so they match. first oval was screwed onto the sign, second one was banner-taped and PE glued. this...