We always use Vantine Studio from New York ... yup, so far they're the best.
I can ask our president about the cost, but all I know is that the big composite, which is nicely framed, cost about $350 (I know bc we still have pranks with other houses, "borrowing" big composites for Greek Week or Homecoming, and they always borrowing ours too!)
Oh, making a composite for your house is worthed all the way ...